Method validate

src/pptx/enum/base.py:93–96

Raise |ValueError| if `value` is not an assignable value.

(cls: Type[_T], value: _T)

    @classmethod
    def validate(cls: Type[_T], value: _T):
        """Raise |ValueError| if `value` is not an assignable value."""
        if value not in cls:
            raise ValueError(f"{value} not a member of {cls.__name__} enumeration")


class DocsPageFormatter(object):