def process_value_in(self, field_name, field_value):
        if field_value == None:
            return None
      
        val = self._process_value_in(field_name, field_value)
        if val != None:
            return val
        else:
            return field_value
returns references in the scene as a list of value tuples. The values in the tuples can be namespaces, refNodes (as PyNodes),
dataset/ETHPy150Open benadida/helios-server/helios/datatypes/__init__.py/LDObject.process_value_in--crossover with--dataset/ETHPy150Open CountZer0/PipelineConstructionSet/python/maya/site-packages/pymel-1.0.3/pymel/core/system.py/iterReferences