public Builder mergeFrom(com.google.protobuf.DescriptorProtos.UninterpretedOption.NamePart other) {
          if (other == getDefaultInstance()) return this;
          if (other.hasNamePart()) {
            bitField0_ |= 0x00000001;
            namePart_ = other.namePart_;
            onChanged();
          }
          if (other.hasIsExtension()) {
            setIsExtension(other.getIsExtension());
          }
          this.mergeUnknownFields(other.getUnknownFields());
          return this;
        }