Showing proper icon for the program installed through Wine

Suppose you have installed foo.exe thorough wine. But when you lunching it the unity side panel showing wine icon instead of foo icon. To solve this go to folder ~./local/share/applications/ 
Open foo.desktop in your favorite text editor. Then append the line StartupWMClass=foo.exe in the file (make sure to change foo to your actual application name) and save it. Now lunch the application it should show proper icon. 

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