@java.lang.Override
  public java.lang.String getCustomClassId() {
    java.lang.Object ref = customClassId_;
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
    } else {
      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
      java.lang.String s = bs.toStringUtf8();
      customClassId_ = s;
      return s;
    }
  }
<pre>
If this custom class is a resource, the custom_class_id is the resource id
of the CustomClass. Case sensitive.
</pre>

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

@return The customClassId.
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/CustomClass.java