Splits all edges between two supplied vertices in current :class:`BreakpointGraph` instance with respect to the provided guidance.

        Iterates over all edges between two supplied vertices and splits each one of them with respect to the guidance.

        :param vertex1: a first out of two vertices edges between which are to be split
        :type vertex1: any python hashable object. :class:`bg.vertex.BGVertex` is expected
        :param vertex2: a second out of two vertices edges between which are to be split
        :type vertex2: any python hashable object. :class:`bg.vertex.BGVertex` is expected
        :param guidance: a guidance for underlying :class:`bg.multicolor.Multicolor` objects to be split
        :type guidance: iterable where each entry is iterable with colors entries
        :return: ``None``, performs inplace changes

def __split_all_edges_between_two_vertices(self, vertex1, vertex2, guidance=None, sorted_guidance=False,
                                               account_for_colors_multiplicity_in_guidance=True):
        """ Splits all edges between two supplied vertices in current :class:`BreakpointGraph` instance with respect to the provided guidance.

        Iterates over all edges between two supplied vertices and splits each one of them with respect to the guidance.

        :param vertex1: a first out of two vertices edges between which are to be split
        :type vertex1: any python hashable object. :class:`bg.vertex.BGVertex` is expected
        :param vertex2: a second out of two vertices edges between which are to be split
        :type vertex2: any python hashable object. :class:`bg.vertex.BGVertex` is expected
        :param guidance: a guidance for underlying :class:`bg.multicolor.Multicolor` objects to be split
        :type guidance: iterable where each entry is iterable with colors entries
        :return: ``None``, performs inplace changes
        """
        edges_to_be_split_keys = [key for v1, v2, key in self.bg.edges(nbunch=vertex1, keys=True) if v2 == vertex2]
        for key in edges_to_be_split_keys:
            self.__split_bgedge(BGEdge(vertex1=vertex1, vertex2=vertex2, multicolor=None), guidance=guidance,
                                sorted_guidance=sorted_guidance,
                                account_for_colors_multiplicity_in_guidance=account_for_colors_multiplicity_in_guidance,
                                key=key)