How are subchannels (in the structure composition sample) represented?

[Tyronnosaurus]

If we generate an MF4 with this example code, specifically the section about "Structure channel composition", we get a channel that contains many subchannels, as can be seen when opening it on asammdf-GUI:

If I then load the MF4 with asammdf, how can I distinguish whether channels in a Channel Group are at the same level or if some are subchannels of another?

• blocks.utils.Group.channels seems to return a flat list with no info about hierarchy.
• blocks.v4_blocks.DataGroup, ChannelGroup & Channel don't seem to have any members or methods to do it.
• ChannelGroup.channelDependencies seems to show different information unrelated to this hierarchy.