message: default endpoint;
diff: import { GetMeshSourceOptions, YamlConfig } from '@graphql-mesh/types';
  const GraphQLHandler = require('@graphql-mesh/graphql');
  +const DEFAULT_ENDPOINT: string = "https://graphql.contentful.com/";
  +
  export default class ContentfulHandler extends GraphQLHandler {
  constructor({ name, config, cache }: GetMeshSourceOptions<YamlConfig.GraphQLHandler>) {
  + if (!config.endpoint) config.endpoint = DEFAULT_ENDPOINT;
  +
  // @ts-ignore
  config.schemaHeaders = { authorization: `Bearer ${config.token}`};
  super({ name, config, cache});
  