get_concrete_parent_argument

app.util.helpers.generics.get_concrete_parent_argument(cls: type | GenericAlias, parent: type | Iterable[type], param: ParamType, **kwargs: Unpack[GetConcreteParentArgumentKwargs]) → ConcreteArgType

Return the concrete argument resolved for param from parent within cls.

If parent is an iterable of types, check each in order until one is found that specialises param.

Raises:

GenericsError – If param cannot be resolved to a concrete type.

Parameters:

• cls (type | GenericAlias)

• parent (type | Iterable[type])

• param (ParamType)

• kwargs (Unpack[GetConcreteParentArgumentKwargs])

Return type:

ConcreteArgType