_getXrefString(self, xref, compressed=1) -> PyObject *

def _getXrefString(self, xref, compressed=1):
        """_getXrefString(self, xref, compressed=1) -> PyObject *"""
        if self.isClosed:
            raise ValueError("operation illegal for closed doc")

        return _fitz.Document__getXrefString(self, xref, compressed)