Tizen Developers

Can't seem to get String.IndexOf() to work.  Compiler keeps saying "no matching member function for call to 'IndexOf'"  

Here's the definition from the documentation: 

result Tizen::Base::String::IndexOf    (    const String &     str, int     startIndex, int &     indexOf  )         const

here's the code i'm trying: 

int i;

const String string1 = "abcdefg";

const String string2 = "bcd";

string1.IndexOf(&string2, 0, &i);