added users support

sharepoint/api/src/main/java/de/muehlencord/shared/sharepoint/api/usergroup/SPUsers.java

@@ -0,0 +1,35 @@
+package de.muehlencord.shared.sharepoint.api.usergroup;
+
+import de.muehlencord.shared.sharepoint.api.SPContext;
+import de.muehlencord.shared.sharepoint.api.SPJaxbObject;
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.JAXBException;
+
+/**
+ *
+ * @author joern.muehlencord
+ */
+public class SPUsers extends SPJaxbObject<Users> {
+
+    public SPUsers(SPContext context) throws JAXBException {
+        super(Users.class, context);
+    }
+
+    @Override
+    protected java.util.List getSchemaLocation() {
+        java.util.List<String> schemaList = new ArrayList();
+        schemaList.add("/xsd/usergroup.xsd");
+        return schemaList;
+    }
+    
+    public List<String> getEmailAddresses() {
+        List<String> returnList = new ArrayList<>();
+        for (User user : getValue().users) {
+            returnList.add (user.email);
+        }
+        
+        return returnList; 
+    }
+
+}