final Insn lastInsn = firstInsn.append(foundFirstInsn);
affirm(lastInsn != null);
foundCodeAttr.setTheCode(firstInsn);
// ajust the method's stack and locals demand
foundCodeAttr.setStackUsed(max(foundCodeAttr.stackUsed(),
codeAttr.stackUsed()));
foundCodeAttr.setLocalsUsed(max(foundCodeAttr.localsUsed(),
codeAttr.localsUsed()));
// add the exception attribute or its exceptions