Function CStr

3rdparty/tinyxml2/tinyxml2.h:2309–2311

If in print to memory mode, return a pointer to the XML file in memory. */

    	the XML file in memory.
    */
    const char* CStr() const {
        return _buffer.Mem();
    }
    /**
    	If in print to memory mode, return the size
    	of the XML file in memory. (Note the size returned