Given a Schema and an AST node describing a type, return a GraphQLType
definition which applies to that type. For example, if provided the parsed
AST node for [User], a GraphQLList instance will be returned, containing
the type called "User" found in the schema. If a type called "User" is not
found in the schema, then undefined will be returned.
Given a Schema and an AST node describing a type, return a GraphQLType definition which applies to that type. For example, if provided the parsed AST node for
[User], a GraphQLList instance will be returned, containing the type called "User" found in the schema. If a type called "User" is not found in the schema, then undefined will be returned.