Please document SchemaLink constructor

[calocan]

I had to troll through the code to figure out that SchemaLink accepts a context in the constructor. I don't see this documented anywhere. Are any of the Link subclass constructors documented, or is the superclass constructor documented?

Intended outcome:
When I use a class that is part of the Apollo API, all of the method parameters, including the constructor, are documented

Actual outcome:
SchemaLink is not documented this way

How to reproduce the issue:
Try to use SchemaLink with an ApolloClient. Instantiate the client and run client.query() using resolvers that require context. Context is undefined because SchemaLink is not documented to accept a context.

[sheerun]

This is bad and bit me as well. How to set context when using SchemaLink?

[sheerun]

And why doesn't schemaLink doesn't receive context passed from query, at least as a default?