How to set in a custom GraphQL query the custom field type to a collection type?

[MurzNN]

How can I set in a custom GraphQL query the custom field type to a collection type (eg Posts)? Here https://payloadcms.com/docs/graphql/extending I see the example with only scalar types like GraphQL.GraphQLString and GraphQL.GraphQLFloat:

export default buildConfig({
  graphQL: {
    queries: (GraphQL, payload) => {
      return {
        MyCustomQuery: {
          type: new GraphQL.GraphQLObjectType({
            name: 'MyCustomQuery',
            fields: {
              text: {
                type: GraphQL.GraphQLString,
              },
              someNumberField: {
                type: GraphQL.GraphQLFloat,
              },

But I need to define the field that returns the Post document with multiple fields, how to define this?

By the way, what is the correct Typescript type of the GraphQL argument in the function queries: (GraphQL, payload)?

[MurzNN]

Seems I found a working way, it works like this:

              someNumberField: {
                type: GraphQL.GraphQLFloat,
              },
              post: {
                type: payload.Query.fields.Post.type,
              },

Is this the right way?