Get a loaded frozen instance of a specific profile.

def load(
        cls, name=None, parent_name=None, profile_is_live=False, values=None, defaults=None
    ) -> "EnvvarProfile":
        """
        Get a loaded frozen instance of a specific profile.
        """
        instance = cls(
            name=name,
            parent_name=parent_name,
            profile_is_live=profile_is_live,
            values=values,
            defaults=defaults,
        )
        instance._do_load()
        return instance