TransferExtensionsForIdentities.
        [Preview API] This method transfers extensions for the given identities.
        :param [IdentityMapping] identity_mapping: The identity mapping.

def transfer_extensions_for_identities(self, identity_mapping):
        """TransferExtensionsForIdentities.
        [Preview API] This method transfers extensions for the given identities.
        :param [IdentityMapping] identity_mapping: The identity mapping.
        """
        content = self._serialize.body(identity_mapping, '[IdentityMapping]')
        self._send(http_method='POST',
                   location_id='da46fe26-dbb6-41d9-9d6b-86bf47e4e444',
                   version='5.1-preview.1',
                   content=content)