docs: def all_edges_with_verts(self, v_indices, as_boolean=False):
          '''
          returns all of the faces that contain at least one of the vertices in v_indices
          '''
          included_vertices = np.zeros(self.v.shape[0], dtype=bool)
          included_vertices[v_indices] = True
          edges_with_verts = included_vertices[self.e].all(axis=1)
          if as_boolean:
              return edges_with_verts
          return np.nonzero(edges_with_verts)[0]