1- Discuss the similarities and differences between Decorator design pattern and Composite design pattern, 2- Discuss the similarities and differences between Proxy design pattern and Decorator design pattern, 3- To add a new class (data type) easily in a software structure, say which is the best design pattern to use, 4- The Adapter design pattern is called with another name which refers to a concept used in legacy systems treatments. Say what is the other name of Adapter Design pattern