| addedFiles | Added files through Unity's UI. |
| movedFiles | Files that was added but has been moved. |
| movedFromFiles | Same list as movedFiles, but contains the location of where these was moved from. |
| importedFiles | Imported files, which were not added through Unity's UI. |
When you change Assets in Unity, this method for the current chosen instance of IExternalCodeEditor parses the new and changed Assets.