SWIG: operator const char*() const

[Helmut Zeisel]

I have a class, say myString, with an operator const char*() const
for which I want to create Python
shadow classes (swig -c++ -swig -python)

class myString
{
public:
  const char* operator() const;
  ...
};

Using this code, I get the warning:

"Can't wrap operator const char* unless renamed to a valid identifier."

So I tried to rename:

%rename(c_str) myString::operator const char*() const;

gives the error message

"Syntax error in input"

What is the correct syntax to rename?

Helmut