Given a namespace ID and block number, get the current namespace op (revealed or ready) for it
        if the namespace existed after that block.  Optionally return the namespace
        record even if it's a NAMESPACE_REVEAL and it expired.

        Return the dict with the parameters on success.
        Return None if the namespace has not yet been revealed.

def get_namespace_op_state( self, namespace_id, block_number, include_expired=False ):
        """
        Given a namespace ID and block number, get the current namespace op (revealed or ready) for it
        if the namespace existed after that block.  Optionally return the namespace
        record even if it's a NAMESPACE_REVEAL and it expired.

        Return the dict with the parameters on success.
        Return None if the namespace has not yet been revealed.
        """

        cur = self.db.cursor()
        return namedb_get_namespace( cur, namespace_id, block_number, include_expired=include_expired )