.
| GetDepth | How deeply are we nested? Root tracks have depth <c>0</c>. | 
| GetPath |  | 
| GetProperty | Searches <paramref name="clip" /> for a property track with the given <paramref name="path" />,
starting from the root level of the clip. | 
| GetReference | Searches <paramref name="clip" /> for a track with the given <paramref name="path" />,
starting from the root level of the clip. | 
| GetTrack | Searches <paramref name="clip" /> for a track with the given <paramref name="path" />,
starting from the root level of the clip. | 
| Update | For each track in the given <paramref name="clip" /> that we have a mapped property for,
set the property value to whatever value is stored in that track at the given <paramref name="time" />. |