A 7 year's old little boy "Ahmad Salar" uses his father's mobile phone. He installs games from the Google Play store quite often. However, being a probing guy he sometimes gets curious that while he is in process of installing a certain game he cannot instantiate another process of the game. Ahmed asked his father about the dilemma. The father took a scientific approach to answer the question. The answer was something to do with Software patterns. Your task is to identify the precise pattern and logically argue about its intent and usefulness. Draw a UML diagram for the identified pattern also