@Override
public void endVisit(JParameterRef x, Context ctx) {
int paramIndex = methodCall.getTarget().getParams().indexOf(x.getParameter());
assert paramIndex != -1;
// Replace with a cloned call argument.
CloneExpressionVisitor cloner = new CloneExpressionVisitor();
JExpression arg = methodCall.getArgs().get(paramIndex);
JExpression clone = cloner.cloneExpression(arg);
clone = maybeCast(clone, x.getType());
ctx.replaceMe(clone);
}
