def merge_texts!(hash, element)
      text_children = texts(element)
      if text_children.join.empty?
        hash
      else
        # must use value to prevent double-escaping
        merge!(hash, CONTENT_KEY, text_children.join)
      end
    end
def merge_texts!(hash, element)
      text_children = texts(element)
      if text_children.join.empty?
        hash
      else
        # must use value to prevent double-escaping
        merge!(hash, CONTENT_KEY, text_children.join)
      end
    end
Merge all the texts of an element into the hash

 hash::
   Hash to add the converted emement to.
 element::
   XML element whose texts are to me merged into the hash