diff --git a/third_party/protobuf/3.6.1/protobuf.bzl b/third_party/protobuf/3.6.1/protobuf.bzl
index d6f042c..3a0decd 100644
--- a/third_party/protobuf/3.6.1/protobuf.bzl
+++ b/third_party/protobuf/3.6.1/protobuf.bzl
@@ -1,127 +1,129 @@
 def _GetPath(ctx, path):
-  if ctx.label.workspace_root:
-    return ctx.label.workspace_root + '/' + path
-  else:
-    return path
+    if ctx.label.workspace_root:
+        return ctx.label.workspace_root + "/" + path
+    else:
+        return path
 
 def _IsNewExternal(ctx):
-  # Bazel 0.4.4 and older have genfiles paths that look like:
-  #   bazel-out/local-fastbuild/genfiles/external/repo/foo
-  # After the exec root rearrangement, they look like:
-  #   ../repo/bazel-out/local-fastbuild/genfiles/foo
-  return ctx.label.workspace_root.startswith("../")
+    # Bazel 0.4.4 and older have genfiles paths that look like:
+    #   bazel-out/local-fastbuild/genfiles/external/repo/foo
+    # After the exec root rearrangement, they look like:
+    #   ../repo/bazel-out/local-fastbuild/genfiles/foo
+    return ctx.label.workspace_root.startswith("../")
 
 def _GenDir(ctx):
-  if _IsNewExternal(ctx):
-    # We are using the fact that Bazel 0.4.4+ provides repository-relative paths
-    # for ctx.genfiles_dir.
-    return ctx.genfiles_dir.path + (
-        "/" + ctx.attr.includes[0] if ctx.attr.includes and ctx.attr.includes[0] else "")
-  # This means that we're either in the old version OR the new version in the local repo.
-  # Either way, appending the source path to the genfiles dir works.
-  return ctx.var["GENDIR"] + "/" + _SourceDir(ctx)
+    if _IsNewExternal(ctx):
+        # We are using the fact that Bazel 0.4.4+ provides repository-relative paths
+        # for ctx.genfiles_dir.
+        return ctx.genfiles_dir.path + (
+            "/" + ctx.attr.includes[0] if ctx.attr.includes and ctx.attr.includes[0] else ""
+        )
+
+    # This means that we're either in the old version OR the new version in the local repo.
+    # Either way, appending the source path to the genfiles dir works.
+    return ctx.var["GENDIR"] + "/" + _SourceDir(ctx)
 
 def _SourceDir(ctx):
-  if not ctx.attr.includes:
-    return ctx.label.workspace_root
-  if not ctx.attr.includes[0]:
-    return _GetPath(ctx, ctx.label.package)
-  if not ctx.label.package:
-    return _GetPath(ctx, ctx.attr.includes[0])
-  return _GetPath(ctx, ctx.label.package + '/' + ctx.attr.includes[0])
+    if not ctx.attr.includes:
+        return ctx.label.workspace_root
+    if not ctx.attr.includes[0]:
+        return _GetPath(ctx, ctx.label.package)
+    if not ctx.label.package:
+        return _GetPath(ctx, ctx.attr.includes[0])
+    return _GetPath(ctx, ctx.label.package + "/" + ctx.attr.includes[0])
 
-def _CcHdrs(srcs, use_grpc_plugin=False):
-  ret = [s[:-len(".proto")] + ".pb.h" for s in srcs]
-  if use_grpc_plugin:
-    ret += [s[:-len(".proto")] + ".grpc.pb.h" for s in srcs]
-  return ret
+def _CcHdrs(srcs, use_grpc_plugin = False):
+    ret = [s[:-len(".proto")] + ".pb.h" for s in srcs]
+    if use_grpc_plugin:
+        ret += [s[:-len(".proto")] + ".grpc.pb.h" for s in srcs]
+    return ret
 
-def _CcSrcs(srcs, use_grpc_plugin=False):
-  ret = [s[:-len(".proto")] + ".pb.cc" for s in srcs]
-  if use_grpc_plugin:
-    ret += [s[:-len(".proto")] + ".grpc.pb.cc" for s in srcs]
-  return ret
+def _CcSrcs(srcs, use_grpc_plugin = False):
+    ret = [s[:-len(".proto")] + ".pb.cc" for s in srcs]
+    if use_grpc_plugin:
+        ret += [s[:-len(".proto")] + ".grpc.pb.cc" for s in srcs]
+    return ret
 
-def _CcOuts(srcs, use_grpc_plugin=False):
-  return _CcHdrs(srcs, use_grpc_plugin) + _CcSrcs(srcs, use_grpc_plugin)
+def _CcOuts(srcs, use_grpc_plugin = False):
+    return _CcHdrs(srcs, use_grpc_plugin) + _CcSrcs(srcs, use_grpc_plugin)
 
-def _PyOuts(srcs, use_grpc_plugin=False):
-  ret = [s[:-len(".proto")] + "_pb2.py" for s in srcs]
-  if use_grpc_plugin:
-    ret += [s[:-len(".proto")] + "_pb2_grpc.py" for s in srcs]
-  return ret
+def _PyOuts(srcs, use_grpc_plugin = False):
+    ret = [s[:-len(".proto")] + "_pb2.py" for s in srcs]
+    if use_grpc_plugin:
+        ret += [s[:-len(".proto")] + "_pb2_grpc.py" for s in srcs]
+    return ret
 
-def _RelativeOutputPath(path, include, dest=""):
-  if include == None:
-    return path
+def _RelativeOutputPath(path, include, dest = ""):
+    if include == None:
+        return path
 
-  if not path.startswith(include):
-    fail("Include path %s isn't part of the path %s." % (include, path))
+    if not path.startswith(include):
+        fail("Include path %s isn't part of the path %s." % (include, path))
 
-  if include and include[-1] != '/':
-    include = include + '/'
-  if dest and dest[-1] != '/':
-    dest = dest + '/'
+    if include and include[-1] != "/":
+        include = include + "/"
+    if dest and dest[-1] != "/":
+        dest = dest + "/"
 
-  path = path[len(include):]
-  return dest + path
+    path = path[len(include):]
+    return dest + path
 
 def _proto_gen_impl(ctx):
-  """General implementation for generating protos"""
-  srcs = ctx.files.srcs
-  deps = []
-  deps += ctx.files.srcs
-  source_dir = _SourceDir(ctx)
-  gen_dir = _GenDir(ctx)
-  if source_dir:
-    import_flags = ["-I" + source_dir, "-I" + gen_dir]
-  else:
-    import_flags = ["-I."]
+    """General implementation for generating protos"""
+    srcs = ctx.files.srcs
+    deps = []
+    deps += ctx.files.srcs
+    source_dir = _SourceDir(ctx)
+    gen_dir = _GenDir(ctx)
+    if source_dir:
+        import_flags = ["-I" + source_dir, "-I" + gen_dir]
+    else:
+        import_flags = ["-I."]
 
-  for dep in ctx.attr.deps:
-    import_flags += dep.proto.import_flags
-    deps += dep.proto.deps
+    for dep in ctx.attr.deps:
+        import_flags += dep.proto.import_flags
+        deps += dep.proto.deps
 
-  args = []
-  if ctx.attr.gen_cc:
-    args += ["--cpp_out=" + gen_dir]
-  if ctx.attr.gen_py:
-    args += ["--python_out=" + gen_dir]
+    args = []
+    if ctx.attr.gen_cc:
+        args += ["--cpp_out=" + gen_dir]
+    if ctx.attr.gen_py:
+        args += ["--python_out=" + gen_dir]
 
-  inputs = srcs + deps
-  if ctx.executable.plugin:
-    plugin = ctx.executable.plugin
-    lang = ctx.attr.plugin_language
-    if not lang and plugin.basename.startswith('protoc-gen-'):
-      lang = plugin.basename[len('protoc-gen-'):]
-    if not lang:
-      fail("cannot infer the target language of plugin", "plugin_language")
+    inputs = srcs + deps
+    if ctx.executable.plugin:
+        plugin = ctx.executable.plugin
+        lang = ctx.attr.plugin_language
+        if not lang and plugin.basename.startswith("protoc-gen-"):
+            lang = plugin.basename[len("protoc-gen-"):]
+        if not lang:
+            fail("cannot infer the target language of plugin", "plugin_language")
 
-    outdir = gen_dir
-    if ctx.attr.plugin_options:
-      outdir = ",".join(ctx.attr.plugin_options) + ":" + outdir
-    args += ["--plugin=protoc-gen-%s=%s" % (lang, plugin.path)]
-    args += ["--%s_out=%s" % (lang, outdir)]
-    inputs += [plugin]
+        outdir = gen_dir
+        if ctx.attr.plugin_options:
+            outdir = ",".join(ctx.attr.plugin_options) + ":" + outdir
+        args += ["--plugin=protoc-gen-%s=%s" % (lang, plugin.path)]
+        args += ["--%s_out=%s" % (lang, outdir)]
+        inputs += [plugin]
 
-  if args:
-    ctx.action(
-        inputs=inputs,
-        outputs=ctx.outputs.outs,
-        arguments=args + import_flags + [s.path for s in srcs],
-        executable=ctx.executable.protoc,
-        mnemonic="ProtoCompile",
-        use_default_shell_env=True,
+    if args:
+        ctx.action(
+            inputs = inputs,
+            outputs = ctx.outputs.outs,
+            arguments = args + import_flags + [s.path for s in srcs],
+            executable = ctx.executable.protoc,
+            mnemonic = "ProtoCompile",
+            use_default_shell_env = True,
+        )
+
+    return struct(
+        proto = struct(
+            srcs = srcs,
+            import_flags = import_flags,
+            deps = deps,
+        ),
     )
 
-  return struct(
-      proto=struct(
-          srcs=srcs,
-          import_flags=import_flags,
-          deps=deps,
-      ),
-  )
-
 proto_gen = rule(
     attrs = {
         "srcs": attr.label_list(allow_files = True),
@@ -170,248 +172,254 @@
 
 def cc_proto_library(
         name,
-        srcs=[],
-        deps=[],
-        cc_libs=[],
-        include=None,
-        protoc="@com_google_protobuf//:protoc",
-        internal_bootstrap_hack=False,
-        use_grpc_plugin=False,
-        default_runtime="@com_google_protobuf//:protobuf",
+        srcs = [],
+        deps = [],
+        cc_libs = [],
+        include = None,
+        protoc = "@com_google_protobuf//:protoc",
+        internal_bootstrap_hack = False,
+        use_grpc_plugin = False,
+        default_runtime = "@com_google_protobuf//:protobuf",
         **kargs):
-  """Bazel rule to create a C++ protobuf library from proto source files
+    """Bazel rule to create a C++ protobuf library from proto source files
 
-  NOTE: the rule is only an internal workaround to generate protos. The
-  interface may change and the rule may be removed when bazel has introduced
-  the native rule.
+    NOTE: the rule is only an internal workaround to generate protos. The
+    interface may change and the rule may be removed when bazel has introduced
+    the native rule.
 
-  Args:
-    name: the name of the cc_proto_library.
-    srcs: the .proto files of the cc_proto_library.
-    deps: a list of dependency labels; must be cc_proto_library.
-    cc_libs: a list of other cc_library targets depended by the generated
-        cc_library.
-    include: a string indicating the include path of the .proto files.
-    protoc: the label of the protocol compiler to generate the sources.
-    internal_bootstrap_hack: a flag indicate the cc_proto_library is used only
-        for bootstraping. When it is set to True, no files will be generated.
-        The rule will simply be a provider for .proto files, so that other
-        cc_proto_library can depend on it.
-    use_grpc_plugin: a flag to indicate whether to call the grpc C++ plugin
-        when processing the proto files.
-    default_runtime: the implicitly default runtime which will be depended on by
-        the generated cc_library target.
-    **kargs: other keyword arguments that are passed to cc_library.
+    Args:
+      name: the name of the cc_proto_library.
+      srcs: the .proto files of the cc_proto_library.
+      deps: a list of dependency labels; must be cc_proto_library.
+      cc_libs: a list of other cc_library targets depended by the generated
+          cc_library.
+      include: a string indicating the include path of the .proto files.
+      protoc: the label of the protocol compiler to generate the sources.
+      internal_bootstrap_hack: a flag indicate the cc_proto_library is used only
+          for bootstraping. When it is set to True, no files will be generated.
+          The rule will simply be a provider for .proto files, so that other
+          cc_proto_library can depend on it.
+      use_grpc_plugin: a flag to indicate whether to call the grpc C++ plugin
+          when processing the proto files.
+      default_runtime: the implicitly default runtime which will be depended on by
+          the generated cc_library target.
+      **kargs: other keyword arguments that are passed to cc_library.
 
-  """
+    """
 
-  includes = []
-  if include != None:
-    includes = [include]
+    includes = []
+    if include != None:
+        includes = [include]
 
-  if internal_bootstrap_hack:
-    # For pre-checked-in generated files, we add the internal_bootstrap_hack
-    # which will skip the codegen action.
+    if internal_bootstrap_hack:
+        # For pre-checked-in generated files, we add the internal_bootstrap_hack
+        # which will skip the codegen action.
+        proto_gen(
+            name = name + "_genproto",
+            srcs = srcs,
+            deps = [s + "_genproto" for s in deps],
+            includes = includes,
+            protoc = protoc,
+            visibility = ["//visibility:public"],
+        )
+
+        # An empty cc_library to make rule dependency consistent.
+        native.cc_library(
+            name = name,
+            **kargs
+        )
+        return
+
+    grpc_cpp_plugin = None
+    if use_grpc_plugin:
+        grpc_cpp_plugin = "//external:grpc_cpp_plugin"
+
+    gen_srcs = _CcSrcs(srcs, use_grpc_plugin)
+    gen_hdrs = _CcHdrs(srcs, use_grpc_plugin)
+    outs = gen_srcs + gen_hdrs
+
     proto_gen(
-        name=name + "_genproto",
-        srcs=srcs,
-        deps=[s + "_genproto" for s in deps],
-        includes=includes,
-        protoc=protoc,
-        visibility=["//visibility:public"],
+        name = name + "_genproto",
+        srcs = srcs,
+        deps = [s + "_genproto" for s in deps],
+        includes = includes,
+        protoc = protoc,
+        plugin = grpc_cpp_plugin,
+        plugin_language = "grpc",
+        gen_cc = 1,
+        outs = outs,
+        visibility = ["//visibility:public"],
     )
-    # An empty cc_library to make rule dependency consistent.
+
+    if default_runtime and not default_runtime in cc_libs:
+        cc_libs = cc_libs + [default_runtime]
+    if use_grpc_plugin:
+        cc_libs = cc_libs + ["//external:grpc_lib"]
+
     native.cc_library(
-        name=name,
-        **kargs)
-    return
-
-  grpc_cpp_plugin = None
-  if use_grpc_plugin:
-    grpc_cpp_plugin = "//external:grpc_cpp_plugin"
-
-  gen_srcs = _CcSrcs(srcs, use_grpc_plugin)
-  gen_hdrs = _CcHdrs(srcs, use_grpc_plugin)
-  outs = gen_srcs + gen_hdrs
-
-  proto_gen(
-      name=name + "_genproto",
-      srcs=srcs,
-      deps=[s + "_genproto" for s in deps],
-      includes=includes,
-      protoc=protoc,
-      plugin=grpc_cpp_plugin,
-      plugin_language="grpc",
-      gen_cc=1,
-      outs=outs,
-      visibility=["//visibility:public"],
-  )
-
-  if default_runtime and not default_runtime in cc_libs:
-    cc_libs = cc_libs + [default_runtime]
-  if use_grpc_plugin:
-    cc_libs = cc_libs + ["//external:grpc_lib"]
-
-  native.cc_library(
-      name=name,
-      srcs=gen_srcs,
-      hdrs=gen_hdrs,
-      deps=cc_libs + deps,
-      includes=includes,
-      **kargs)
+        name = name,
+        srcs = gen_srcs,
+        hdrs = gen_hdrs,
+        deps = cc_libs + deps,
+        includes = includes,
+        **kargs
+    )
 
 def internal_gen_well_known_protos_java(srcs):
-  """Bazel rule to generate the gen_well_known_protos_java genrule
+    """Bazel rule to generate the gen_well_known_protos_java genrule
 
-  Args:
-    srcs: the well known protos
-  """
-  root = Label("%s//protobuf_java" % native.repository_name()).workspace_root
-  pkg = PACKAGE_NAME + "/" if PACKAGE_NAME else ""
-  if root == "":
-    include = " -I%ssrc " % pkg
-  else:
-    include = " -I%s/%ssrc " % (root, pkg)
-  native.genrule(
-    name = "gen_well_known_protos_java",
-    srcs = srcs,
-    outs = [
-        "wellknown.srcjar",
-    ],
-    cmd = "$(location :protoc) --java_out=$(@D)/wellknown.jar" +
-          " %s $(SRCS) " % include +
-          " && mv $(@D)/wellknown.jar $(@D)/wellknown.srcjar",
-    tools = [":protoc"],
-  )
+    Args:
+      srcs: the well known protos
+    """
+    root = Label("%s//protobuf_java" % native.repository_name()).workspace_root
+    pkg = PACKAGE_NAME + "/" if PACKAGE_NAME else ""
+    if root == "":
+        include = " -I%ssrc " % pkg
+    else:
+        include = " -I%s/%ssrc " % (root, pkg)
+    native.genrule(
+        name = "gen_well_known_protos_java",
+        srcs = srcs,
+        outs = [
+            "wellknown.srcjar",
+        ],
+        cmd = "$(location :protoc) --java_out=$(@D)/wellknown.jar" +
+              " %s $(SRCS) " % include +
+              " && mv $(@D)/wellknown.jar $(@D)/wellknown.srcjar",
+        tools = [":protoc"],
+    )
 
 def internal_copied_filegroup(name, srcs, strip_prefix, dest, **kwargs):
-  """Macro to copy files to a different directory and then create a filegroup.
+    """Macro to copy files to a different directory and then create a filegroup.
 
-  This is used by the //:protobuf_python py_proto_library target to work around
-  an issue caused by Python source files that are part of the same Python
-  package being in separate directories.
+    This is used by the //:protobuf_python py_proto_library target to work around
+    an issue caused by Python source files that are part of the same Python
+    package being in separate directories.
 
-  Args:
-    srcs: The source files to copy and add to the filegroup.
-    strip_prefix: Path to the root of the files to copy.
-    dest: The directory to copy the source files into.
-    **kwargs: extra arguments that will be passesd to the filegroup.
-  """
-  outs = [_RelativeOutputPath(s, strip_prefix, dest) for s in srcs]
+    Args:
+      srcs: The source files to copy and add to the filegroup.
+      strip_prefix: Path to the root of the files to copy.
+      dest: The directory to copy the source files into.
+      **kwargs: extra arguments that will be passesd to the filegroup.
+    """
+    outs = [_RelativeOutputPath(s, strip_prefix, dest) for s in srcs]
 
-  native.genrule(
-      name = name + "_genrule",
-      srcs = srcs,
-      outs = outs,
-      cmd = " && ".join(
-          ["cp $(location %s) $(location %s)" %
-           (s, _RelativeOutputPath(s, strip_prefix, dest)) for s in srcs]),
-  )
+    native.genrule(
+        name = name + "_genrule",
+        srcs = srcs,
+        outs = outs,
+        cmd = " && ".join(
+            ["cp $(location %s) $(location %s)" %
+             (s, _RelativeOutputPath(s, strip_prefix, dest)) for s in srcs],
+        ),
+    )
 
-  native.filegroup(
-      name = name,
-      srcs = outs,
-      **kwargs)
+    native.filegroup(
+        name = name,
+        srcs = outs,
+        **kwargs
+    )
 
 def py_proto_library(
         name,
-        srcs=[],
-        deps=[],
-        py_libs=[],
-        py_extra_srcs=[],
-        include=None,
-        default_runtime="@com_google_protobuf//:protobuf_python",
-        protoc="@com_google_protobuf//:protoc",
-        use_grpc_plugin=False,
+        srcs = [],
+        deps = [],
+        py_libs = [],
+        py_extra_srcs = [],
+        include = None,
+        default_runtime = "@com_google_protobuf//:protobuf_python",
+        protoc = "@com_google_protobuf//:protoc",
+        use_grpc_plugin = False,
         **kargs):
-  """Bazel rule to create a Python protobuf library from proto source files
+    """Bazel rule to create a Python protobuf library from proto source files
 
-  NOTE: the rule is only an internal workaround to generate protos. The
-  interface may change and the rule may be removed when bazel has introduced
-  the native rule.
+    NOTE: the rule is only an internal workaround to generate protos. The
+    interface may change and the rule may be removed when bazel has introduced
+    the native rule.
 
-  Args:
-    name: the name of the py_proto_library.
-    srcs: the .proto files of the py_proto_library.
-    deps: a list of dependency labels; must be py_proto_library.
-    py_libs: a list of other py_library targets depended by the generated
-        py_library.
-    py_extra_srcs: extra source files that will be added to the output
-        py_library. This attribute is used for internal bootstrapping.
-    include: a string indicating the include path of the .proto files.
-    default_runtime: the implicitly default runtime which will be depended on by
-        the generated py_library target.
-    protoc: the label of the protocol compiler to generate the sources.
-    use_grpc_plugin: a flag to indicate whether to call the Python C++ plugin
-        when processing the proto files.
-    **kargs: other keyword arguments that are passed to cc_library.
+    Args:
+      name: the name of the py_proto_library.
+      srcs: the .proto files of the py_proto_library.
+      deps: a list of dependency labels; must be py_proto_library.
+      py_libs: a list of other py_library targets depended by the generated
+          py_library.
+      py_extra_srcs: extra source files that will be added to the output
+          py_library. This attribute is used for internal bootstrapping.
+      include: a string indicating the include path of the .proto files.
+      default_runtime: the implicitly default runtime which will be depended on by
+          the generated py_library target.
+      protoc: the label of the protocol compiler to generate the sources.
+      use_grpc_plugin: a flag to indicate whether to call the Python C++ plugin
+          when processing the proto files.
+      **kargs: other keyword arguments that are passed to cc_library.
 
-  """
-  outs = _PyOuts(srcs, use_grpc_plugin)
+    """
+    outs = _PyOuts(srcs, use_grpc_plugin)
 
-  includes = []
-  if include != None:
-    includes = [include]
+    includes = []
+    if include != None:
+        includes = [include]
 
-  grpc_python_plugin = None
-  if use_grpc_plugin:
-    grpc_python_plugin = "//external:grpc_python_plugin"
-    # Note: Generated grpc code depends on Python grpc module. This dependency
-    # is not explicitly listed in py_libs. Instead, host system is assumed to
-    # have grpc installed.
+    grpc_python_plugin = None
+    if use_grpc_plugin:
+        grpc_python_plugin = "//external:grpc_python_plugin"
+        # Note: Generated grpc code depends on Python grpc module. This dependency
+        # is not explicitly listed in py_libs. Instead, host system is assumed to
+        # have grpc installed.
 
-  proto_gen(
-      name=name + "_genproto",
-      srcs=srcs,
-      deps=[s + "_genproto" for s in deps],
-      includes=includes,
-      protoc=protoc,
-      gen_py=1,
-      outs=outs,
-      visibility=["//visibility:public"],
-      plugin=grpc_python_plugin,
-      plugin_language="grpc"
-  )
+    proto_gen(
+        name = name + "_genproto",
+        srcs = srcs,
+        deps = [s + "_genproto" for s in deps],
+        includes = includes,
+        protoc = protoc,
+        gen_py = 1,
+        outs = outs,
+        visibility = ["//visibility:public"],
+        plugin = grpc_python_plugin,
+        plugin_language = "grpc",
+    )
 
-  if default_runtime and not default_runtime in py_libs + deps:
-    py_libs = py_libs + [default_runtime]
+    if default_runtime and not default_runtime in py_libs + deps:
+        py_libs = py_libs + [default_runtime]
 
-  native.py_library(
-      name=name,
-      srcs=outs+py_extra_srcs,
-      deps=py_libs+deps,
-      imports=includes,
-      **kargs)
+    native.py_library(
+        name = name,
+        srcs = outs + py_extra_srcs,
+        deps = py_libs + deps,
+        imports = includes,
+        **kargs
+    )
 
 def internal_protobuf_py_tests(
-    name,
-    modules=[],
-    **kargs):
-  """Bazel rules to create batch tests for protobuf internal.
+        name,
+        modules = [],
+        **kargs):
+    """Bazel rules to create batch tests for protobuf internal.
 
-  Args:
-    name: the name of the rule.
-    modules: a list of modules for tests. The macro will create a py_test for
-        each of the parameter with the source "google/protobuf/%s.py"
-    kargs: extra parameters that will be passed into the py_test.
+    Args:
+      name: the name of the rule.
+      modules: a list of modules for tests. The macro will create a py_test for
+          each of the parameter with the source "google/protobuf/%s.py"
+      kargs: extra parameters that will be passed into the py_test.
 
-  """
-  for m in modules:
-    s = "python/google/protobuf/internal/%s.py" % m
-    native.py_test(
-        name="py_%s" % m,
-        srcs=[s],
-        main=s,
-        **kargs)
-
+    """
+    for m in modules:
+        s = "python/google/protobuf/internal/%s.py" % m
+        native.py_test(
+            name = "py_%s" % m,
+            srcs = [s],
+            main = s,
+            **kargs
+        )
 
 def check_protobuf_required_bazel_version():
-  """For WORKSPACE files, to check the installed version of bazel.
+    """For WORKSPACE files, to check the installed version of bazel.
 
-  This ensures bazel supports our approach to proto_library() depending on a
-  copied filegroup. (Fixed in bazel 0.5.4)
-  """
-  expected = apple_common.dotted_version("0.5.4")
-  current = apple_common.dotted_version(native.bazel_version)
-  if current.compare_to(expected) < 0:
-    fail("Bazel must be newer than 0.5.4")
+    This ensures bazel supports our approach to proto_library() depending on a
+    copied filegroup. (Fixed in bazel 0.5.4)
+    """
+    expected = apple_common.dotted_version("0.5.4")
+    current = apple_common.dotted_version(native.bazel_version)
+    if current.compare_to(expected) < 0:
+        fail("Bazel must be newer than 0.5.4")