Given the name of a namespace, get it if it is currently
        being revealed.

        Return the reveal record on success.
        Return None if it is not being revealed, or is expired.

def get_namespace_reveal( self, namespace_id, include_history=True ):
        """
        Given the name of a namespace, get it if it is currently
        being revealed.

        Return the reveal record on success.
        Return None if it is not being revealed, or is expired.
        """
        cur = self.db.cursor()
        namespace_reveal = namedb_get_namespace_reveal( cur, namespace_id, self.lastblock, include_history=include_history )
        return namespace_reveal