private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.speech.v2.BatchRecognizeFileMetadata,
            com.google.cloud.speech.v2.BatchRecognizeFileMetadata.Builder,
            com.google.cloud.speech.v2.BatchRecognizeFileMetadataOrBuilder>
        getFilesFieldBuilder() {
      if (filesBuilder_ == null) {
        filesBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.speech.v2.BatchRecognizeFileMetadata,
                com.google.cloud.speech.v2.BatchRecognizeFileMetadata.Builder,
                com.google.cloud.speech.v2.BatchRecognizeFileMetadataOrBuilder>(
                files_, ((bitField0_ & 0x00000008) != 0), getParentForChildren(), isClean());
        files_ = null;
      }
      return filesBuilder_;
    }
<pre>
Audio files with file metadata for ASR.
The maximum number of files allowed to be specified is 15.
</pre>

<code>repeated .google.cloud.speech.v2.BatchRecognizeFileMetadata files = 3;</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/BatchRecognizeRequest.java