6. (50 points) Based on the description and high level requirements listed below for OutdoorPowerEquipmentDepot retailer provide your answers for the following: a. Create the UML use-case diagram b. Create the UML design class diagram c. Name and document 2 design patterns that are used in your design class diagram High-Level Requirements; OutdoorPowerEquipmentDepot retailer would like to have an application that will give it the competitive advantage over its rivals to offer its customers maximum flexibility, speed, simplicity, and freedom to buy, trade-in, and lease outdoor power Equipment. Using the newly introduced online PoweriauinmentIradeinMorket software, the retailer employees and customer can determine the current market value of the trade-in equipment in a matter of seconds. Customer/Salesman/ Manager PowerEquipmentTradeinMarket OutdoorPowerEquipmentDepot 6. (50 points) Based on the description and high level requirements listed below for OutdoorPowerEquipmentDepot retailer provide your answers for the following: a. Create the UML use-case diagram b. Create the UML design class diagram c. Name and document 2 design patterns that are used in your design class diagram High-Level Requirements; OutdoorPowerEquipmentDepot retailer would like to have an application that will give it the competitive advantage over its rivals to offer its customers maximum flexibility, speed, simplicity, and freedom to buy, trade-in, and lease outdoor power Equipment. Using the newly introduced online PoweriauinmentIradeinMorket software, the retailer employees and customer can determine the current market value of the trade-in equipment in a matter of seconds. Customer/Salesman/ Manager PowerEquipmentTradeinMarket OutdoorPowerEquipmentDepot