Getting the source clips from a Multicam and Merged clip

Hi there, I'm sending out the Bruce Bullis bat signal!

Wondering if there is any way in the API to get the source media files that constitute a Merged clip or a Multicam clip? I see that I can easily find out if a project item is either of those using the API:

if (item.type === ProjectItemType.CLIP) {
    if (item.isMulticamClip() || item.isMergedClip()) {
     .... what now?

item.videoComponents()

but videoComponents.numItems is 0 for a Multicam made from 3 clips, as well as a merged clip made from one video and one audio source file.

Kind regards,

Max