/*
* Copyright 2016 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package flow;
import android.support.annotation.NonNull;
/**
* Represents an absolute path in the logical information tree of an app, from the root of the tree
* to a leaf, which is typically associated with app "screen" or "state". Each element in a path
* typically represents a scope, narrowing and adding information from root to leaf.
*/
public interface TreeKey {
@NonNull Object getParentKey();
}