plug_graphql v0.3.1 GraphQL.Plug.Endpoint
This is the core plug for mounting a GraphQL server.
You can build your own pipeline by mounting the
GraphQL.Plug.Endpoint plug directly.
forward "/graphql", GraphQL.Plug.Endpoint, schema: {MyApp.Schema, :schema}
You may want to look at how GraphQL.Plug configures its pipeline.
Specifically note how Plug.Parsers are configured, as this is required
for pre-parsing the various POST bodies depending on content-type.