public Builder clear() {
          super.clear();
          path_ = java.util.Collections.emptyList();
          bitField0_ = (bitField0_ & ~0x00000001);
          span_ = java.util.Collections.emptyList();
          bitField0_ = (bitField0_ & ~0x00000002);
          leadingComments_ = "";
          bitField0_ = (bitField0_ & ~0x00000004);
          trailingComments_ = "";
          bitField0_ = (bitField0_ & ~0x00000008);
          return this;
        }