c2.setTemporaryReceiver(seq);
seq.open();
exp.process(c2);
seq.close();
ValueRepresentation val = seq.getSequence();
seq.reset();
return val;
case LAZY_TAIL_EXPRESSION: {
TailExpression tail = (TailExpression)exp;
VariableReference vr = (VariableReference)tail.getBaseExpression();