public com.google.protobuf.ByteString getFileNameBytes() {
      java.lang.Object ref = fileName_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        fileName_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
The name of the generated file. The default is `MuxStream.key` with the
extension suffix corresponding to the `MuxStream.container`.

Individual segments also have an incremental 10-digit zero-padded suffix
starting from 0 before the extension, such as `mux_stream0000000123.ts`.
</pre>

<code>string file_name = 2;</code>

@return The bytes for fileName.
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/MuxStream.java