public java.lang.String getClassName() {
        java.lang.Object ref = className_;
        if (!(ref instanceof java.lang.String)) {
          com.google.protobuf.ByteString bs =
              (com.google.protobuf.ByteString) ref;
          java.lang.String s = bs.toStringUtf8();
          if (bs.isValidUtf8()) {
            className_ = s;
          }
          return s;
        } else {
          return (java.lang.String) ref;
        }
      }
<code>optional string class_name = 1;</code>
@return The className.
llap-common/src/gen/protobuf/gen-java/org/apache/hadoop/hive/llap/daemon/rpc/LlapDaemonProtocolProtos.java