def get_registered_descriptor(self, descriptor_name):
        """
        RPC call to fetch details of a named descriptor wallet registered to this signer.

        Parameters
        ----------
        descriptor_name : string
            Name of descriptor registration record to return.

        Returns
        -------
        dict
            Description of registered descriptor wallet identified by registration name.
            Contains keys:
                descriptor_name - str, name of descritpor registration
                descriptor - str, descriptor output script, may contain substitution placeholders
                datavalues - dict containing placeholders for substitution into script
        """
        params = {'descriptor_name': descriptor_name}
        return self._jadeRpc('get_registered_descriptor', params)

        RPC call to fetch details of a named descriptor wallet registered to this signer.

        Parameters
        ----------
        descriptor_name : string
            Name of descriptor registration record to return.

        Returns
        -------
        dict
            Description of registered descriptor wallet identified by registration name.
            Contains keys:
                descriptor_name - str, name of descritpor registration
                descriptor - str, descriptor output script, may contain substitution placeholders
                datavalues - dict containing placeholders for substitution into script
        
electrum/plugins/jade/jadepy/jade.py