code: public final DataHash getDecodedDataHash() throws TLVParserException {
          byte[] content = getContent();
          if (DataHash.isDataHash(content)) {
              return new DataHash(content);
          }
          throw new TLVParserException("Invalid DataHash content");
      }
docs: Converts TLV element content data to {@link DataHash} object.
  
  @return Decoded instance of data hash.
  
  @throws TLVParserException
  when content can not be decoded to data hash.