}

    override fun whenReady(action: Action<TaskExecutionGraph>) {
        delegate.whenReady(action.wrap())
    }

    override fun findTask(path: String?): Task? {
        return delegate.findTask(path).also { task ->
            if (task == null) {
                // check whether the path refers to a different project
                val parentPath = path?.let(Path::path)?.parent?.path

	if tid == 0 {
		return nil, plainError("missing tid")
	}

	f := efaceOf(&fn)
	if f._type == nil || f._type.Kind_&abi.KindMask != abi.Func {
		return nil, plainError("fn must be a function")
	}
	fv := (*funcval)(f.data)

	a := efaceOf(&stackArgs)
	if a._type != nil && a._type.Kind_&abi.KindMask != abi.Pointer {
		return nil, plainError("args must be a pointer or nil")
	}
	argp := a.data
	var argSize uintptr