public Builder clearInitialEventSignature() {
        bitField0_ = (bitField0_ & ~0x00000400);
        initialEventSignature_ = getDefaultInstance().getInitialEventSignature();
        onChanged();
        return this;
      }
<code>optional bytes initial_event_signature = 11;</code>
@return This builder for chaining.
llap-common/src/gen/protobuf/gen-java/org/apache/hadoop/hive/llap/daemon/rpc/LlapDaemonProtocolProtos.java