in plasma-store/src/ffi/tests.rs [156:161]
fn conn_setup() -> UniquePtr<ffi::PlasmaClient> {
let pc: UniquePtr<ffi::PlasmaClient> = ffi::new_plasma_client();
let res1 = ffi::connect(pc.as_ref().unwrap(), "/tmp/plasma", 0);
assert_eq!(res1.code, ffi::StatusCode::OK);
pc
}