code: public String getTagValue(String tagName) {
          String value = null;
  
          if (mReadMethod != null) {
              value = mReadMethod.getTagValue(tagName);
          }
          if (value == null && mWriteMethod != null) {
              value = mWriteMethod.getTagValue(tagName);
          }
  
          return value;
      }
docs: Overridden to check both the read and write MethodDocs for the tag