code: public static Collection<AbstractHtml> findTagsByAttributeName(
              final String attributeName, final AbstractHtml... fromTags)
              throws NullValueException {
          return findTagsByAttributeName(false, attributeName, fromTags);
      }
docs: Finds and returns the collection of tags (including the nested tags)
  matching with the given attribute name.
  
  @param attributeName
  the name of the attribute.
  @param fromTags
  from which the findings to be done.
  @return the collection of tags matching with the given attribute.
  @throws NullValueException
  if the {@code attributeName} or
  {@code fromTags} is null
  @since 2.1.8
  @author WFF