--- a/libervia/backend/plugins/plugin_xep_0077.py	Tue Jun 18 12:06:45 2024 +0200
+++ b/libervia/backend/plugins/plugin_xep_0077.py	Wed Jun 19 18:44:57 2024 +0200
@@ -48,7 +48,7 @@
     # FIXME: request IQ is not send to check available fields,
     #        while XEP recommand to use it
     # FIXME: doesn't handle data form or oob
-    namespace = 'jabber:client'
+    namespace = "jabber:client"
 
     def __init__(self, jid_, password, email=None, check_certificate=True):
         log.debug(_("Registration asked for {jid}").format(jid=jid_))
@@ -70,15 +70,25 @@
             tls_required = False
             configurationForTLS = ssl.CertificateOptions(trustRoot=None)
         tls_init = xmlstream.TLSInitiatingInitializer(
-            xs, required=tls_required, configurationForTLS=configurationForTLS)
+            xs, required=tls_required, configurationForTLS=configurationForTLS
+        )
 
         xs.initializers.append(tls_init)
 
     def register(self, xmlstream):
-        log.debug(_("Stream started with {server}, now registering"
-                    .format(server=self.jid.host)))
-        iq = XEP_0077.build_register_iq(self.xmlstream, self.jid, self.password, self.email)
-        d = iq.send(self.jid.host).addCallbacks(self.registration_cb, self.registration_eb)
+        log.debug(
+            _(
+                "Stream started with {server}, now registering".format(
+                    server=self.jid.host
+                )
+            )
+        )
+        iq = XEP_0077.build_register_iq(
+            self.xmlstream, self.jid, self.password, self.email
+        )
+        d = iq.send(self.jid.host).addCallbacks(
+            self.registration_cb, self.registration_eb
+        )
         d.chainDeferred(self.registered)
 
     def registration_cb(self, answer):
@@ -261,10 +271,11 @@
         @param port(int): port of the server to register to
         """
         if host is None:
-           host = self.host.memory.config_get("", "xmpp_domain", "127.0.0.1")
+            host = self.host.memory.config_get("", "xmpp_domain", "127.0.0.1")
         check_certificate = host != "127.0.0.1"
         authenticator = RegisteringAuthenticator(
-            jid_, password, email, check_certificate=check_certificate)
+            jid_, password, email, check_certificate=check_certificate
+        )
         registered_d = authenticator.registered
         server_register = ServerRegister(authenticator)
         reactor.connectTCP(host, port, server_register)
@@ -288,11 +299,7 @@
         client = self.host.get_client(profile_key)
         return self.unregister(client, jid.JID(to_jid_s))
 
-    def unregister(
-            self,
-            client: SatXMPPEntity,
-            to_jid: jid.JID
-    ) -> defer.Deferred:
+    def unregister(self, client: SatXMPPEntity, to_jid: jid.JID) -> defer.Deferred:
         """remove registration from a server/service
 
         BEWARE! if you remove registration from profile own server, this will
@@ -309,4 +316,3 @@
         if not to_jid or to_jid == jid.JID(client.jid.host):
             d.addCallback(lambda __: client.entity_disconnect())
         return d
-