package leetcode;
import java.util.List;
public interface NestedInteger {
	// @return true if this NestedInteger holds a single integer, rather than a nested list.
	public boolean isInteger();
	
	// @return the single integer that this NestedInteger holds, if it holds a single integer
	// Return null if this NestedInteger holds a nested list
	public Integer getInteger();
	
	// @return the nested list that this NestedInteger holds, if it holds a nested list
	// Return null if this NestedInteger holds a single integer
	public List<NestedInteger> getList();
}