pub unsafe extern "C" fn igraph_get_shortest_path_astar(
graph: *const igraph_t,
vertices: *mut igraph_vector_int_t,
edges: *mut igraph_vector_int_t,
from: igraph_int_t,
to: igraph_int_t,
weights: *const igraph_vector_t,
mode: igraph_neimode_t,
heuristic: igraph_astar_heuristic_func_t,
extra: *mut c_void,
) -> igraph_error_t