diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/interfaces/ILoginMethod.kt b/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/interfaces/ILoginMethod.kt
index 440a5693..c1834b29 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/interfaces/ILoginMethod.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/interfaces/ILoginMethod.kt
@@ -1,4 +1,20 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2019-9-20.
+ */
+
 package pl.szczodrzynski.edziennik.api.v2.interfaces
 
-interface ILoginMethod {
+import pl.szczodrzynski.edziennik.App
+import pl.szczodrzynski.edziennik.api.interfaces.ProgressCallback
+import pl.szczodrzynski.edziennik.datamodels.LoginStore
+import pl.szczodrzynski.edziennik.datamodels.Profile
+
+abstract class ILoginMethod(
+        val app: App,
+        val profile: Profile?,
+        val loginStore: LoginStore,
+        val callback: ProgressCallback,
+        val onSuccess: () -> Unit
+) {
+
 }
\ No newline at end of file
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/librus/data/LibrusApiGrades.kt b/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/librus/data/LibrusApiGrades.kt
index 261a4476..eae53a75 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/librus/data/LibrusApiGrades.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/librus/data/LibrusApiGrades.kt
@@ -6,12 +6,17 @@ import pl.szczodrzynski.edziennik.api.v2.models.DataStore
 import pl.szczodrzynski.edziennik.datamodels.LoginStore
 import pl.szczodrzynski.edziennik.datamodels.Profile
 
-class LibrusGrades(val app: App,
-                   val profile: Profile,
-                   val loginStore: LoginStore,
-                   val dataStore: DataStore,
-                   val callback: ProgressCallback,
-                   val onSuccess: () -> Unit) {
+class LibrusApiGrades(val app: App,
+                      val profile: Profile,
+                      val loginStore: LoginStore,
+                      val dataStore: DataStore,
+                      val callback: ProgressCallback,
+                      val onSuccess: () -> Unit) : EndpointInterface {
+    override fun sync() {
+
+    }
+
+
     init {
 
     }
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/librus/data/LibrusSynergiaGrades.kt b/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/librus/data/LibrusSynergiaGrades.kt
index a1693141..ecf10682 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/librus/data/LibrusSynergiaGrades.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/librus/data/LibrusSynergiaGrades.kt
@@ -1,4 +1,19 @@
 package pl.szczodrzynski.edziennik.api.v2.librus.data
 
-class LibrusSynergiaGrades {
+import pl.szczodrzynski.edziennik.App
+import pl.szczodrzynski.edziennik.api.interfaces.ProgressCallback
+import pl.szczodrzynski.edziennik.api.v2.models.DataStore
+import pl.szczodrzynski.edziennik.datamodels.LoginStore
+import pl.szczodrzynski.edziennik.datamodels.Profile
+
+class LibrusSynergiaGrades(val app: App,
+                      val profile: Profile,
+                      val loginStore: LoginStore,
+                      val dataStore: DataStore,
+                      val callback: ProgressCallback,
+                      val onSuccess: () -> Unit) {
+
+    init {
+
+    }
 }
\ No newline at end of file