Function igraph_motifs_randesu_callback 

pub unsafe extern "C" fn igraph_motifs_randesu_callback(
    graph: *const igraph_t,
    size: igraph_int_t,
    cut_prob: *const igraph_vector_t,
    callback: igraph_motifs_handler_t,
    extra: *mut c_void,
) -> igraph_error_t