(self)
return self.read_long()
A union is encoded by first writing a long value indicating the
        zero-based position within the union of the schema of its value.

        The value is then encoded per the indicated schema within the union.
A union is encoded by first writing a long value indicating the
        zero-based position within the union of the schema of its value.
A union is encoded by first writing a long value indicating the zero - based position within the union of the schema of its value .
def read_index(self):
        """A union is encoded by first writing a long value indicating the
        zero-based position within the union of the schema of its value.

        The value is then encoded per the indicated schema within the union.
        """
        return self.read_long()
def read_index ( self ) : return self . read_long ( )