Testing children of group members

[Sam Corbett]

Hi,

I want to use Brooklyn's test entities to test an app with the following 
structure:

  cluster:
  - member 1
     - child 1
  - member 2
     - child 2

The things I want to test are on the child entities. Every child has the 
same CAMP id.

LoopOverGroupMembersTestCase gets me the members, but can I get from 
them to the children? Having experimented lots I currently think the 
answer is no.

I'm wondering whether there's a case for a `RelativeEntityTestCase` 
class, that resolves its target relative to its parent entity. (I had 
assumed that that was what LOGMTC would do, but in fact it overwrites 
any test spec target with the group member.)

Can anyone help?

Thanks,

Sam.