GraphQL ENUM
__TypeKind
An enum describing what kind of type a given __Type is.
link Definition
- enum __TypeKind {
- #   Indicates this type is a scalar.
- #   Indicates this type is an object. `fields` and `possibleTypes` are valid fields.
- #   Indicates this type is an interface. `fields` and `possibleTypes` are valid 
- #   fields.
- #   Indicates this type is a union. `possibleTypes` is a valid field.
- #   Indicates this type is an enum. `enumValues` is a valid field.
- #   Indicates this type is an input object. `inputFields` is a valid field.
- #   Indicates this type is a list. `ofType` is a valid field.
- #   Indicates this type is a non-null. `ofType` is a valid field.
- }