| add mixin mix:one to /thePath1 | |
| add mixin mix:one,mix:two to /thePath1,/thePath2 | |
| add mixin mix:three, mix:four to /thePath3, /thePath4 | |
| remove mixin mix:one from /thePath1 | |
| remove mixin mix:one,mix:two from /thePath1,/thePath2 | |
| remove mixin mix:three, mix:four from /thePath3, /thePath4 |