Ctrl+Alt+O - removing unused imports
Alt+Cmd+V - extracting a variable
Alt+Cmd+C - extracting a constant
Alt+Cmd+M - extracting a method
Alt+Cmd+W - extracting a widget
Ctrl+Alt+O - removing unused imports
Alt+Cmd+V - extracting a variable
Alt+Cmd+C - extracting a constant
Alt+Cmd+M - extracting a method
Alt+Cmd+W - extracting a widget