code: def append(self,text):
          
          if text is Text:
              text = Text(self, id=self.id + '.text.' + str(len(self.data)+1) )
          elif text is Speech:
              text = Speech(self, id=self.id + '.speech.' + str(len(self.data)+1) ) #pylint: disable=redefined-variable-type
          else:
              assert isinstance(text, Text) or isinstance(text, Speech)
          self.data.append(text)
          return text
docs: Add a text (or speech) to the document:
  
          Example 1::
  
              doc.append(folia.Text)
  
          Example 2::
              doc.append( folia.Text(doc, id='example.text') )
  
          Example 3::
  
              doc.append(folia.Speech)