code: def copy(self):
          ''' Returns a copy of self '''
          copy = Response(self.app)
          copy.status = self.status
          copy.headers = self.headers.copy()
          copy.content_type = self.content_type
          return copf copy(self):
          ''' Returns a copy of self '''
          copy = Response(self.app)
          copy.status = self.status
          copy.headers = self.headers.copy()
          copy.content_type = self.content_type
          return copy
docs: Returns a copy of self