Method __init__

src/pptx/oxml/xmlchemy.py:137–139

(self, attr_name: str, simple_type: type[AttributeType])

    """Base class for OptionalAttribute and RequiredAttribute, providing common methods."""

    def __init__(self, attr_name: str, simple_type: type[AttributeType]):
        self._attr_name = attr_name
        self._simple_type = simple_type

    def populate_class_members(self, element_cls: Type[BaseOxmlElement], prop_name: str):
        """