Non-Null

GraphQL types are nullable. The valuenullis a valid response for field type.

A Non‐null type is a type modifier: it wraps another type instance in theofTypefield. Non‐null types do not allownullas a response, and indicate required inputs for arguments and input object fields.

• kind must return __TypeKind.NON_NULL .
• ofType : Any type except Non‐null.
• All other fields must return null .