def METHOD_NAME(self, trace_collection):
    self.variable_closure_traces = []
    for (
        closure_variable
    ) in self.subnode_generator_ref.getFunctionBody().getClosureVariables():
        trace = trace_collection.getVariableCurrentTrace(closure_variable)
        trace.addNameUsage()
        self.variable_closure_traces.append((closure_variable, trace))
    # TODO: Generator body may know something too.
    return self, None, None