public Builder addAllFiles(
        java.lang.Iterable<? extends com.google.cloud.speech.v2.BatchRecognizeFileMetadata>
            values) {
      if (filesBuilder_ == null) {
        ensureFilesIsMutable();
        com.google.protobuf.AbstractMessageLite.Builder.addAll(values, files_);
        onChanged();
      } else {
        filesBuilder_.addAllMessages(values);
      }
      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