}
public static SixModelObject openasync(String path, String mode, ThreadContext tc) {
SixModelObject IOType = tc.curFrame.codeRef.staticInfo.compUnit.hllConfig.ioType;
IOHandleInstance h = (IOHandleInstance)IOType.st.REPR.allocate(tc, IOType.st);
h.handle = new AsyncFileHandle(tc, path, mode);
return h;
}