How to figure out buffer's parent GESClipAsset with GESPipeline?

[Seungha Yang]

Hi all,

I'm building an application which is to editing VOD using GES.
Roughly, my GESpipeline is configured to generate raw audio/video without any
encoding and I'm pulling raw audio/video buffers via appsink. 

The point is that, I want to figure out that final buffer's (at appsink) 
parent asset (i.e., VOD file) with explicit methods such as using GstMeta
or some special callbacks/signals. 

Can GESPipeline support that way?

Regards
Seungha Yang