def extract_tree_without(self, labels, suppress_unifurcations=True):
        '''Extract a copy of this ``Tree`` without the leaves labeled by the strings in ``labels``

        Args:
            ``labels`` (``set``): Set of leaf labels to exclude

            ``suppress_unifurcations`` (``bool``): ``True`` to suppress unifurcations, otherwise ``False``

        Returns:
            ``Tree``: Copy of this ``Tree``, exluding the leaves labeled by the strings in ``labels``
        '''
        return self.extract_tree(labels, True, suppress_unifurcations)
Extract a copy of this ``Tree`` without the leaves labeled by the strings in ``labels``

        Args:
            ``labels`` (``set``): Set of leaf labels to exclude

            ``suppress_unifurcations`` (``bool``): ``True`` to suppress unifurcations, otherwise ``False``

        Returns:
            ``Tree``: Copy of this ``Tree``, exluding the leaves labeled by the strings in ``labels``