pub unsafe extern "C" fn igraph_read_graph_dimacs_flow(
graph: *mut igraph_t,
instream: *mut FILE,
problem: *mut igraph_strvector_t,
label: *mut igraph_vector_int_t,
source: *mut igraph_int_t,
target: *mut igraph_int_t,
capacity: *mut igraph_vector_t,
directed: igraph_bool_t,
) -> igraph_error_t