public com.google.protobuf.ByteString getDetectedLanguageCodeBytes() {
    java.lang.Object ref = detectedLanguageCode_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      detectedLanguageCode_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }
public com . google . protobuf . ByteString getDetectedLanguageCodeBytes ( ) { java . lang . Object ref = detectedLanguageCode_ ; if ( ref instanceof java . lang . String ) { com . google . protobuf . ByteString b = com . google . protobuf . ByteString . copyFromUtf8 ( ( java . lang . String ) ref ) ; detectedLanguageCode_ = b ; return b ; } else { return ( com . google . protobuf . ByteString ) ref ; } }
<pre>
The BCP-47 language code of source text in the initial request, detected
automatically, if no source language was passed within the initial
request. If the source language was passed, auto-detection of the language
does not occur and this field will be empty.
</pre>

<code>string detected_language_code = 4;</code>