code: def check_starts_with_this(self, function, docstring):
          
          if docstring:
              first_word = ast.literal_eval(docstring).split()[0]
              if first_word.lower() == 'this':
                  return violations.D404()
docs: D404: First word of the docstring should not be `This`.
  
          Docstrings should use short, simple language. They should not begin
          with "This class is [..]" or "This module contains [..]".