Adding method parameter name with javassist

How can I add method parameter names to a method, when none exists?

There are some examples on how to retrieve these names, if they exist, with a method like this:

CtMethod m;
CodeAttribute codeAttribute = m.getMethodInfo().getCodeAttribute();
if (codeAttribute != null) {
    LocalVariableAttribute table = (LocalVariableAttribute) codeAttribute.getAttribute(LocalVariableAttribute.tag);
    if (table != null)
        for (int i = 0; i < table.tableLength(); i++)
            m.getMethodInfo().getConstPool().getUtf8Info(table.nameIndex(i));
} 

This will give all the parameter names of a method, if they exist.

How can I do the reverse?