private com.google.protobuf.MapFieldBuilder<
            java.lang.String,
            com.google.cloud.translate.v3beta1.TranslateTextGlossaryConfigOrBuilder,
            com.google.cloud.translate.v3beta1.TranslateTextGlossaryConfig,
            com.google.cloud.translate.v3beta1.TranslateTextGlossaryConfig.Builder>
        internalGetMutableGlossaries() {
      if (glossaries_ == null) {
        glossaries_ = new com.google.protobuf.MapFieldBuilder<>(glossariesConverter);
      }
      bitField0_ |= 0x00000040;
      onChanged();
      return glossaries_;
    }
<pre>
Optional. The models to use for translation. Map's key is target language
code. Map's value is the model name. Value can be a built-in general model,
or an AutoML Translation model.

The value format depends on model type:

- AutoML Translation models:
  `projects/{project-number-or-id}/locations/{location-id}/models/{model-id}`

- General (built-in) models:
  `projects/{project-number-or-id}/locations/{location-id}/models/general/nmt`,


If the map is empty or a specific model is not requested for a language
pair, then default google model (nmt) is used.
</pre>

<code>map&lt;string, string&gt; models = 6 [(.google.api.field_behavior) = OPTIONAL];</code>
java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/BatchTranslateDocumentRequest.java