---
title: 'ProguardSpecProvider'
---

Proguard specifications used for Android binaries.

## Members

* [ProguardSpecProvider](#ProguardSpecProvider)
* [to\_json](#to_json)
* [to\_proto](#to_proto)

## ProguardSpecProvider

```
ProguardSpecProvider ProguardSpecProvider(specs)
```

The `ProguardSpecProvider` constructor.

### Parameters

| Parameter | Description |
| --- | --- |
| `specs` | [depset](../builtins/depset) of [File](../builtins/File)s; required  Transitive proguard specs. |

## to\_json

```
string ProguardSpecProvider.to_json()
```

**Deprecated**. This API is deprecated and will be removed soon. Please do not depend on it. It is *disabled* with `---incompatible_struct_has_no_methods`. Use this flag to verify your code is compatible with its imminent removal.
Creates a JSON string from the struct parameter. This method only works if all struct elements (recursively) are strings, ints, booleans, other structs, a list of these types or a dictionary with string keys and values of these types. Quotes and new lines in strings are escaped. Examples:

```
struct(key=123).to_json()
# {"key":123}

struct(key=True).to_json()
# {"key":true}

struct(key=[1, 2, 3]).to_json()
# {"key":[1,2,3]}

struct(key='text').to_json()
# {"key":"text"}

struct(key=struct(inner_key='text')).to_json()
# {"key":{"inner_key":"text"}}

struct(key=[struct(inner_key=1), struct(inner_key=2)]).to_json()
# {"key":[{"inner_key":1},{"inner_key":2}]}

struct(key=struct(inner_key=struct(inner_inner_key='text'))).to_json()
# {"key":{"inner_key":{"inner_inner_key":"text"}}}
```

.

Deprecated: instead, use json.encode(x) or json.encode\_indent(x), which work for values other than structs and do not pollute the struct field namespace.

## to\_proto

```
string ProguardSpecProvider.to_proto()
```

**Deprecated**. This API is deprecated and will be removed soon. Please do not depend on it. It is *disabled* with `---incompatible_struct_has_no_methods`. Use this flag to verify your code is compatible with its imminent removal.
Creates a text message from the struct parameter. This method only works if all struct elements (recursively) are strings, ints, booleans, other structs or dicts or lists of these types. Quotes and new lines in strings are escaped. Struct keys are iterated in the sorted order. Examples:

```
struct(key=123).to_proto()
# key: 123

struct(key=True).to_proto()
# key: true

struct(key=[1, 2, 3]).to_proto()
# key: 1
# key: 2
# key: 3

struct(key='text').to_proto()
# key: "text"

struct(key=struct(inner_key='text')).to_proto()
# key {
#   inner_key: "text"
# }

struct(key=[struct(inner_key=1), struct(inner_key=2)]).to_proto()
# key {
#   inner_key: 1
# }
# key {
#   inner_key: 2
# }

struct(key=struct(inner_key=struct(inner_inner_key='text'))).to_proto()
# key {
#    inner_key {
#     inner_inner_key: "text"
#   }
# }

struct(foo={4: 3, 2: 1}).to_proto()
# foo: {
#   key: 4
#   value: 3
# }
# foo: {
#   key: 2
#   value: 1
# }
```

Deprecated: use proto.encode\_text(x) instead.