query_edge_is_boundary/
query_edge_is_manifold/
query_edge_is_manifold_or_boundary/
query_edge_is_wire/
query_edge_other_vertex/
query_edge_share_vert/
query_face_get_other_edges/
query_face_next_vertex/
query_face_prev_vertex/
query_vertex_in_edge/
query_vertex_is_boundary/
query_vertex_pair_share_face/
query_vertices_in_edge/