public Builder clearContainerIdString() {
        containerIdString_ = getDefaultInstance().getContainerIdString();
        bitField0_ = (bitField0_ & ~0x00000010);
        onChanged();
        return this;
      }
<code>optional string container_id_string = 5;</code>
@return This builder for chaining.
llap-common/src/gen/protobuf/gen-java/org/apache/hadoop/hive/llap/daemon/rpc/LlapDaemonProtocolProtos.java