public final boolean isInitialized() {
      byte isInitialized = memoizedIsInitialized;
      if (isInitialized == 1) return true;
      if (isInitialized == 0) return false;

      memoizedIsInitialized = 1;
      return true;
    }
<code>optional bool withoutSchema = 17;</code>

<pre>
* without schema *
</pre>
node/etl/src/main/java/com/alibaba/otter/node/etl/model/protobuf/BatchProto.java