Method _validate_value

mne/annotations.py:95–108

(
        value: dict | _AnnotationsExtrasDict | None,
    )

    @staticmethod
    def _validate_value(
        value: dict | _AnnotationsExtrasDict | None,
    ) -> _AnnotationsExtrasDict:
        _validate_type(
            value,
            (dict, _AnnotationsExtrasDict, None),
            "extras dict value",
            "dict or None",
        )
        return (
            value
            if isinstance(value, _AnnotationsExtrasDict)
            else _AnnotationsExtrasDict(value or {})
        )

    def __init__(self, initlist=None):
        if not (isinstance(initlist, _AnnotationsExtrasList) or initlist is None):