Add getCurrentSchoolyear and getSchoolyears

src/main/java/ley/untis/UntisClient.java

@@ -197,5 +197,21 @@ public class UntisClient {
         }
     }
 
+    public Schoolyear getCurrentSchoolyear() throws APIRequestException {
+        try {
+            return client.invoke("getCurrentSchoolyear", new Object[0], Schoolyear.class);
+        } catch (Throwable e) {
+            throw new APIRequestException(e);
+        }
+    }
+
+    public SchoolyearResponse getSchoolyears() throws APIRequestException {
+        try {
+            return client.invoke("getSchoolyears", new Object[0], SchoolyearResponse.class);
+        } catch (Throwable e) {
+            throw new APIRequestException(e);
+        }
+    }
+
 
 }

src/main/java/ley/untis/data/Schoolyear.java

@@ -0,0 +1,8 @@
+package ley.untis.data;
+
+public class Schoolyear {
+    public int id;
+    public String name;
+    public int startDate;
+    public int endDate;
+}

src/main/java/ley/untis/data/SchoolyearResponse.java

@@ -0,0 +1,7 @@
+package ley.untis.data;
+
+import java.util.ArrayList;
+
+public class SchoolyearResponse extends ArrayList<Schoolyear> {
+
+}