public protos.KeyProto.Keys buildPartial() {
   protos.KeyProto.Keys result = new protos.KeyProto.Keys(this);
   int from_bitField0_ = bitField0_;
   if (((bitField0_ & 0x00000001) == 0x00000001)) {
     key_ = java.util.Collections.unmodifiableList(key_);
     bitField0_ = (bitField0_ & ~0x00000001);
   }
   result.key_ = key_;
   onBuilt();
   return result;
 }