1)

1)
+    ## Defines "QuadrangleParams" hypothesis
+    #  @param vertex: vertex of a trilateral geometrical face, around which triangles
+    #                 will be created while other elements will be quadrangles.
+    #                 Vertex can be either a GEOM_Object or a vertex ID within the
+    #                 shape to mesh
+    #
+    def TriangleVertex(self, vertex, UseExisting=0):

2) in FixedPoints1D(), convert geom reversed edges into IDs