1. rtcrtpscripttransform api

2. rtcrtpscripttransformer api

3. rtcrtpscripttransformer api: generatekeyframe

4. rtcrtpscripttransformer api: options

5. rtcrtpscripttransformer api: readable

6. rtcrtpscripttransformer api: sendkeyframerequest

7. rtcrtpscripttransformer api: writable

8. rtcrtpscripttransform api: `rtcrtpscripttransform()` constructor