(self, n=1)
Retain the reference

        Parameters
        ----------
        n: The number of times to retain the reference
Retain the reference
Retain the reference
def retain(self, n=1):
        """Retain the reference

        Parameters
        ----------
        n: The number of times to retain the reference
        """
        self.count += n
def retain ( self , n = 1 ) : self . count += n