pub unsafe extern "C" fn igraph_coreness(
graph: *const igraph_t,
cores: *mut igraph_vector_int_t,
mode: igraph_neimode_t,
) -> igraph_error_tpub unsafe extern "C" fn igraph_coreness(
graph: *const igraph_t,
cores: *mut igraph_vector_int_t,
mode: igraph_neimode_t,
) -> igraph_error_t