public Builder clearFiles() {
      if (filesBuilder_ == null) {
        files_ = java.util.Collections.emptyList();
        bitField0_ = (bitField0_ & ~0x00000008);
        onChanged();
      } else {
        filesBuilder_.clear();
      }
      return this;
    }
<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