@java.lang.Override
        public ListVoicesRequest parsePartialFrom(
            com.google.protobuf.CodedInputStream input,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
            throws com.google.protobuf.InvalidProtocolBufferException {
          Builder builder = newBuilder();
          try {
            builder.mergeFrom(input, extensionRegistry);
          } catch (com.google.protobuf.InvalidProtocolBufferException e) {
            throw e.setUnfinishedMessage(builder.buildPartial());
          } catch (com.google.protobuf.UninitializedMessageException e) {
            throw e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
          } catch (java.io.IOException e) {
            throw new com.google.protobuf.InvalidProtocolBufferException(e)
                .setUnfinishedMessage(builder.buildPartial());
          }
          return builder.buildPartial();
        }
<pre>
Optional. Recommended.
[BCP-47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt) language tag.
If not specified, the API will return all supported voices.
If specified, the ListVoices call will only return voices that can be used
to synthesize this language_code. For example, if you specify `"en-NZ"`,
all `"en-NZ"` voices will be returned. If you specify `"no"`, both
`"no-&#92;*"` (Norwegian) and `"nb-&#92;*"` (Norwegian Bokmal) voices will be
returned.
</pre>

<code>string language_code = 1 [(.google.api.field_behavior) = OPTIONAL];</code>

@param value The bytes for languageCode to set.
@return This builder for chaining.
java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/ListVoicesRequest.java