public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException { getSerializedSize(); if (((bitField0_ & 0x00000001) == 0x00000001)) { output.writeBytes(1, getPoolIdBytes()); } if (((bitField0_ & 0x00000002) == 0x00000002)) { output.writeUInt64(2, blockId_); } if (((bitField0_ & 0x00000004) == 0x00000004)) { output.writeUInt64(3, generationStamp_); } if (((bitField0_ & 0x00000008) == 0x00000008)) { output.writeUInt64(4, numBytes_); } getUnknownFields().writeTo(output); }