Add an object to this region at the given offset, and remove all other objects that are fully covered by this
        object.

        :param start:
        :param obj:
        :param object_size:
        :return:

def set_object(self, start, obj, object_size):
        """
        Add an object to this region at the given offset, and remove all other objects that are fully covered by this
        object.

        :param start:
        :param obj:
        :param object_size:
        :return:
        """

        self._store(start, obj, object_size, overwrite=True)