Find last of.
size_type CL_StringData16::find_last_of( const CL_StringData16 & s, size_type pos = npos ); size_type CL_StringData16::find_last_of( const wchar_t * s, size_type pos, size_type n); size_type CL_StringData16::find_last_of( const wchar_t * s, size_type pos = npos ); size_type CL_StringData16::find_last_of( wchar_t c, size_type pos = npos );