public java.util.List<com.google.protobuf.DescriptorProtos.DescriptorProto.ExtensionRange> getExtensionRangeList() {
        if (extensionRangeBuilder_ == null) {
          return java.util.Collections.unmodifiableList(extensionRange_);
        } else {
          return extensionRangeBuilder_.getMessageList();
        }
      }