Few question about the client interface.

[hsblhsn]

Here, where you have defined the interface,

genqlient/graphql/client.go

Lines 41 to 46 in e0accbd

	MakeRequest(
	ctx context.Context,
	opName string,
	query string,
	input, retval interface{},
	) error

On line 45, we see input, retval interface{}. If I am not wrong, here input means the variables of the query and retval means the reference to the output struct.

So, the first interface is input, and second one is output.

But here in the implementation,

genqlient/graphql/client.go

Line 91 in e0accbd

func (c *client) MakeRequest(ctx context.Context, opName string, query string, retval interface{}, variables interface{}) error {

We see the retval, variables interface{}, if i am not wrong the retval means output, and variables means input.

So, the first interface is output, second interface is input.

The problem

On interface definition, the first var is indicating input. But in the implementation, the first var is indicating output.

I am confused.