PK_ERROR_code_t  PK_EDGE_ask_next_in_body
(
--- received arguments ---
PK_EDGE_t        edge,          --- an edge

--- returned arguments ---
PK_EDGE_t *const next           --- the next edge (possibly PK_ENTITY_null)
)


This function returns the next edge in the body which contains the given edge.


This function should be used in conjunction with PK_BODY_ask_first_edge to
scan the edges of a body, one at a time, in the same order as returned
by PK_BODY_ask_edges. If the edge is the last in the body, then PK_ENTITY_null
will be returned.