code: def clause_texts(self):
          
          if not self.is_tagged(CLAUSES):
              self.tag_clauses()
          return self.texts(CLAUSES)
docs: The texts of ``clauses`` multilayer elements.
          Non-consequent spans are concatenated with space character by default.
          Use :py:meth:`~estnltk.text.Text.texts` method to supply custom separators.