Optional children based on boolean field

[s-vakulenko]

Tell me please if it's possible to achieve. I have two entities:

parentEntity:
    ...
   someBool: <boolean(50)>
   ....

childEntity:
   ....

My goal is to generate from 1 to 3 childEntities only for those parentEntities who have true value for someBool field. I've tried this way:

parentEntity:
    ...
   someBool: <boolean(50)>
   children: '@self->someBool ? <numberBetween(1,3)>x @childEntity*'
   ....

childEntity:
   ....

But got the following error:
Invalid token "@self->someBool ? <numberBetween(1,3)>x @childEntity*" found.

[theofidry]

I think the reasoning is good but it appears it is yet another limitation of the current lexer, see #998 for more information