Function Java_dev_yog_NativeBridge_nativeMachineResult 

#[unsafe(no_mangle)]
pub extern "system" fn Java_dev_yog_NativeBridge_nativeMachineResult<'l>(
    env: JNIEnv<'l>,
    _class: JClass<'l>,
    def: JString<'l>,
    dimension: JString<'l>,
    x: jint,
    y: jint,
    z: jint,
    items: JString<'l>,
) -> jstring

What machine def at x y z makes of items (\n-joined, by slot): recipe\nresult\ncount, or null.