pub type jvmtiPrimitiveFieldCallback = unsafe extern "system" fn(kind: jvmtiHeapReferenceKind, info: *const jvmtiHeapReferenceInfo, object_class_tag: jlong, object_tag_ptr: *mut jlong, value: jvalue, value_type: jvmtiPrimitiveType, user_data: *mut c_void) -> jint;