pub unsafe extern "C" fn igraph_vector_int_list_swap(
v1: *mut igraph_vector_int_list_t,
v2: *mut igraph_vector_int_list_t,
)pub unsafe extern "C" fn igraph_vector_int_list_swap(
v1: *mut igraph_vector_int_list_t,
v2: *mut igraph_vector_int_list_t,
)