pub unsafe extern "C" fn igraph_simplify(
graph: *mut igraph_t,
remove_multiple: igraph_bool_t,
remove_loops: igraph_bool_t,
edge_comb: *const igraph_attribute_combination_t,
) -> igraph_error_tpub unsafe extern "C" fn igraph_simplify(
graph: *mut igraph_t,
remove_multiple: igraph_bool_t,
remove_loops: igraph_bool_t,
edge_comb: *const igraph_attribute_combination_t,
) -> igraph_error_t