pub unsafe extern "C" fn igraph_es_all_between(
es: *mut igraph_es_t,
from: igraph_int_t,
to: igraph_int_t,
directed: igraph_bool_t,
) -> igraph_error_tpub unsafe extern "C" fn igraph_es_all_between(
es: *mut igraph_es_t,
from: igraph_int_t,
to: igraph_int_t,
directed: igraph_bool_t,
) -> igraph_error_t