Visibility tweaks for DetailedExitCode

PiperOrigin-RevId: 423303876
diff --git a/src/main/java/com/google/devtools/build/lib/util/DetailedExitCode.java b/src/main/java/com/google/devtools/build/lib/util/DetailedExitCode.java
index 136669d..cf58d77 100644
--- a/src/main/java/com/google/devtools/build/lib/util/DetailedExitCode.java
+++ b/src/main/java/com/google/devtools/build/lib/util/DetailedExitCode.java
@@ -112,7 +112,7 @@
   }
 
   /** Returns the numeric exit code associated with a {@link FailureDetail} message. */
-  private static int getNumericExitCode(FailureDetail failureDetail) {
+  public static int getNumericExitCode(FailureDetail failureDetail) {
     MessageOrBuilder categoryMsg = getCategorySubmessage(failureDetail);
     EnumValueDescriptor subcategoryDescriptor =
         getSubcategoryDescriptor(failureDetail, categoryMsg);