code: def _addMethod(self, effect, verb, resource, conditions):
          
          if verb != "*" and not hasattr(HttpVerb, verb):
              raise NameError("Invalid HTTP verb " + verb + ". Allowed verbs in HttpVerb class")
          resourcePattern = re.compile(self.pathRegex)
          if not resourcePattern.match(resource):
              raise NameError("Invalid resource path: " + resource + ". Path should match " + self.pathRegex)
  
          if resource[:1] == "/":
              resource = resource[1:]
  
          resourceArn = ("arn:aws:execute-api:" +
              self.region + ":" +
              self.awsAccountId + ":" +
              self.restApiId + "/" +
              self.stage + "/" +
              verb + "/" +
              resource)
  
          if effect.lower() == "allow":
              self.allowMethods.append({
                  'resourceArn' : resourceArn,
                  'conditions' : conditions
              })
          elif effect.lower() == "deny":
              self.denyMethods.append({
                  'resourceArn' : resourceArn,
                  'conditions' : conditions
              })
docs: Adds a method to the internal lists of allowed or denied methods. Each object in
          the internal list contains a resource ARN and a condition statement. The condition
          statement can be null.