def _is_generic(resolver_type: Union[StrawberryType, type]) -> bool:
    """Returns True if `resolver_type` is generic else False."""
    if isinstance(resolver_type, StrawberryType):
        return resolver_type.is_graphql_generic

    # solves the Generic subclass case
    if has_object_definition(resolver_type):
        return resolver_type.__strawberry_definition__.is_graphql_generic

    return False
Returns True if `resolver_type` is generic else False.
strawberry/types/field.py