Example 3: Adding an entity to the BA Diagram In this example, the BA diagram is modified to include a new, custom item. Add a new item to the BA diagramCreate a new Program entity called Start in the BA diagram. Define the template file associationAdd a new file type for the new program type.Add the new element to the program entityAdd the new element to the program entity.Define the build rulesDefine the build rules for how the new file type is to be compiled.