Show an implementation for the method body for the instance method whose contract is given below. this is a Map. For full credit your method must have a single return.

/**
* Swaps all keys and values in the Map this, so that keys are

*  values and values are keys. If two or more keys have the same value

*  any key may be swapped to correspond to the value. Additionally,the

*  method returns true if two or more keys share the same value, and * false otherwise. For example,

* * * * * * */

private boolean swapKeysAndValues() {