pub unsafe extern "C" fn igraph_bipartite_projection_size(
graph: *const igraph_t,
types: *const igraph_vector_bool_t,
vcount1: *mut igraph_int_t,
ecount1: *mut igraph_int_t,
vcount2: *mut igraph_int_t,
ecount2: *mut igraph_int_t,
) -> igraph_error_t