Function mutation

mutation(): CustomOperation<
    {
        arguments: null;
        authorization: [];
        handlers: null;
        returnType: null;
        typeName: "Mutation";
    },
    "for",
    "mutationCustomOperation",
>
Use a custom mutation to define an API request that will modify backend data or trigger a subscription event.

Returns CustomOperation<
    {
        arguments: null;
        authorization: [];
        handlers: null;
        returnType: null;
        typeName: "Mutation";
    },
    "for",
    "mutationCustomOperation",
>
a custom mutation
See
https://docs.amplify.aws/react/build-a-backend/data/custom-business-logic/
Example
```
likePost: a
  .mutation()
  .arguments({ postId: a.string() })
  .returns(a.ref('Post'))
  .authorization(allow => [allow.publicApiKey()])
  .handler(a.handler.function(echoHandler))
```
- Defined in node_modules/@aws-amplify/data-schema/dist/esm/CustomOperation.d.ts:116