accessing external class members in steve

Hi,

I have a question about accessing items outside a class. I am trying to 
build a vehicular robot with a gripper. I have a class for the body of 
the robot and another for the gripper. I want to use an object which  
belongs to the class for the body inside the iterate procedure in the 
gripper class.

I have read through the breve documentation and was unable to come up 
with a way of doing this. In fact, what is a clean way of referring to 
objects from other classes without instantiating the class (something 
along the lines of static members or friend functions?)

Thanks,
Mithila
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