pub unsafe extern "C" fn igraph_reindex_membership(
membership: *mut igraph_vector_int_t,
new_to_old: *mut igraph_vector_int_t,
nb_clusters: *mut igraph_int_t,
) -> igraph_error_tpub unsafe extern "C" fn igraph_reindex_membership(
membership: *mut igraph_vector_int_t,
new_to_old: *mut igraph_vector_int_t,
nb_clusters: *mut igraph_int_t,
) -> igraph_error_t