Integer pos = trackInteger(expr.getArg(0));
Variable rvar = valueOf(expr.getArgBox(1), arguments.get(1), 10, target.getParameterType(0), factory);
if (pos != null && pos.intValue() == 0) {
factory.addStatement(new StringBufferPrepend(callee, rvar));
} else {
factory.addStatement(new StringBufferBinaryOp(callee, new Insert(), rvar));
}
return callee;
}
// StringBuffer.delete(int,int)
else if (methodName.equals("delete") && numArgs == 2) {