parameters: (self)
docstring: Override in subclass to insert CGI variables in 'self.environ
docstring_summary: Override in subclass to insert CGI variables in 'self.environ
docstring_tokens: Override in subclass to insert CGI variables in self . environ
function: def add_cgi_vars(self):
          """Override in subclass to insert CGI variables in 'self.environ'"""
          raise NotImplementedError
function_tokens: def add_cgi_vars ( self ) : raise NotImplementedError