public com.google.protobuf.ByteString getOriginalMimeTypeBytes() {
      java.lang.Object ref = originalMimeType_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        originalMimeType_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
Mime type of the original audio file.  For example `audio/m4a`,
`audio/x-alaw-basic`, `audio/mp3`, `audio/3gpp`.
A list of possible audio mime types is maintained at
http://www.iana.org/assignments/media-types/media-types.xhtml#audio
</pre>

<code>string original_mime_type = 8;</code>

@return The bytes for originalMimeType.
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/RecognitionMetadata.java