diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/ColumnFilter.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/ColumnFilter.java
index 9c3546bc61b7ead641fdcff0023b71aa7ed4b950..d5c7ae89a0cbef4bbb0520bf4ca94d18cb981743 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/ColumnFilter.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/ColumnFilter.java
@@ -30,9 +30,9 @@ public class ColumnFilter<T extends ModelData> extends StoreFilterField<T>
 
     private final String column;
 
-    public ColumnFilter(Store<T> store, String col, String label)
+    public ColumnFilter(Store<T> store, String columnName, String label)
     {
-        this.column = col;
+        this.column = columnName;
         setWidth(100);
         setEmptyText(label + "...");
         bind(store);
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/GroupModel.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/GroupModel.java
similarity index 66%
rename from openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/GroupModel.java
rename to openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/GroupModel.java
index 9fe7729a23ac76397b7f9078735b245fe1d5af70..597f029e44c0b7f909c6b613d8fcdd09f21a0966 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/GroupModel.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/GroupModel.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package ch.systemsx.cisd.openbis.generic.client.web.client.application.ui.amc;
+package ch.systemsx.cisd.openbis.generic.client.web.client.application.ui;
 
 import com.extjs.gxt.ui.client.data.BaseModelData;
 import com.extjs.gxt.ui.client.data.ModelData;
@@ -28,8 +28,17 @@ import ch.systemsx.cisd.openbis.generic.client.web.client.dto.Group;
  */
 public class GroupModel extends BaseModelData
 {
+    public static final String OBJECT = "object";
 
-    static final String CODE = "code";
+    public static final String REGISTRATION_DATE = "registrationDate";
+
+    public static final String REGISTRATOR = "registrator";
+
+    public static final String LEADER = "leader";
+
+    public static final String DESCRIPTION = "description";
+
+    public static final String CODE = "code";
 
     private static final long serialVersionUID = 1L;
 
@@ -40,11 +49,11 @@ public class GroupModel extends BaseModelData
     public GroupModel(Group g)
     {
         set(CODE, g.getCode());
-        set("description", g.getDescription());
-        set("leader", g.getLeader());
-        set("registrator", g.getRegistrator());
-        set("registrationDate", g.getRegistrationDate());
-        set("object", g);
+        set(DESCRIPTION, g.getDescription());
+        set(LEADER, g.getLeader());
+        set(REGISTRATOR, g.getRegistrator());
+        set(REGISTRATION_DATE, g.getRegistrationDate());
+        set(OBJECT, g);
     }
 
 }
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/GroupsView.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/GroupsView.java
index f653da1925a1e44d6c920c2b1b646811e377aac9..9f939b25f700067afc48923709c0ad037282f594 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/GroupsView.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/GroupsView.java
@@ -48,6 +48,7 @@ import ch.systemsx.cisd.openbis.generic.client.web.client.application.AbstractAs
 import ch.systemsx.cisd.openbis.generic.client.web.client.application.GenericConstants;
 import ch.systemsx.cisd.openbis.generic.client.web.client.application.GenericViewContext;
 import ch.systemsx.cisd.openbis.generic.client.web.client.application.ui.ColumnFilter;
+import ch.systemsx.cisd.openbis.generic.client.web.client.application.ui.GroupModel;
 import ch.systemsx.cisd.openbis.generic.client.web.client.application.ui.PersonRenderer;
 import ch.systemsx.cisd.openbis.generic.client.web.client.dto.Group;
 
@@ -98,27 +99,27 @@ public class GroupsView extends LayoutContainer
         configs.add(expander);
 
         ColumnConfig codeColumnConfig = new ColumnConfig();
-        codeColumnConfig.setId("code");
+        codeColumnConfig.setId(GroupModel.CODE);
         codeColumnConfig.setHeader("Code");
         codeColumnConfig.setWidth(COL_GROUP);
         configs.add(codeColumnConfig);
 
         ColumnConfig leaderColumnConfig = new ColumnConfig();
-        leaderColumnConfig.setId("leader");
+        leaderColumnConfig.setId(GroupModel.LEADER);
         leaderColumnConfig.setHeader("Leader");
         leaderColumnConfig.setWidth(COL_PERSON);
         leaderColumnConfig.setRenderer(new PersonRenderer());
         configs.add(leaderColumnConfig);
 
         ColumnConfig registratorColumnConfig = new ColumnConfig();
-        registratorColumnConfig.setId("registrator");
+        registratorColumnConfig.setId(GroupModel.REGISTRATOR);
         registratorColumnConfig.setHeader("Registrator");
         registratorColumnConfig.setWidth(COL_PERSON);
         registratorColumnConfig.setRenderer(new PersonRenderer());
         configs.add(registratorColumnConfig);
 
         ColumnConfig registrationDateColumnConfig = new ColumnConfig();
-        registrationDateColumnConfig.setId("registrationDate");
+        registrationDateColumnConfig.setId(GroupModel.REGISTRATION_DATE);
         registrationDateColumnConfig.setHeader("Registration Date");
         registrationDateColumnConfig.setWidth(COL_DATE);
         registrationDateColumnConfig.setDateTimeFormat(DateTimeFormat.getShortDateFormat());
@@ -158,7 +159,8 @@ public class GroupsView extends LayoutContainer
 
         ToolBar toolBar = new ToolBar();
         toolBar.add(new LabelToolItem("Filter:"));
-        toolBar.add(new AdapterToolItem(new ColumnFilter<GroupModel>(store, "code", "code")));
+        toolBar.add(new AdapterToolItem(
+                new ColumnFilter<GroupModel>(store, GroupModel.CODE, "code")));
         toolBar.add(new SeparatorToolItem());
         toolBar.add(new AdapterToolItem(addGroupButton));
         cp.setBottomComponent(toolBar);
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/PersonModel.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/PersonModel.java
index 1ec248379e815b69fd9c04b22b042414e3637a45..b97c2ade813c6fdb74446bc2ec150928b3fe5a1c 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/PersonModel.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/PersonModel.java
@@ -32,7 +32,21 @@ import ch.systemsx.cisd.openbis.generic.client.web.client.dto.RoleAssignment;
 public class PersonModel extends BaseModelData
 {
 
-    private static final long serialVersionUID = 1L;
+    static final String ROLES = "roles";
+
+    static final String EMAIL = "email";
+
+    static final String LAST_NAME = "lastName";
+
+    static final String FIRST_NAME = "firstName";
+
+    static final String REGISTRATION_DATE = "registrationDate";
+
+    static final String REGISTRATOR = "registrator";
+
+    static final String USER_ID = "userId";
+
+    static final long serialVersionUID = 1L;
 
     public PersonModel()
     {
@@ -40,12 +54,12 @@ public class PersonModel extends BaseModelData
 
     public PersonModel(Person p)
     {
-        set("userId", p.getUserId());
-        set("registrator", p.getRegistrator());
-        set("registrationDate", p.getRegistrationDate());
-        set("firstName", p.getFirstName());
-        set("lastName", p.getLastName());
-        set("email", p.getEMail());
-        set("roles", new ArrayList<RoleAssignment>());
+        set(USER_ID, p.getUserId());
+        set(REGISTRATOR, p.getRegistrator());
+        set(REGISTRATION_DATE, p.getRegistrationDate());
+        set(FIRST_NAME, p.getFirstName());
+        set(LAST_NAME, p.getLastName());
+        set(EMAIL, p.getEMail());
+        set(ROLES, new ArrayList<RoleAssignment>());
     }
 }
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/PersonsView.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/PersonsView.java
index 776a016f40a4ab777ecdcebdf2ff0a58237b14f1..c6c7d43878ea4d9747823a69c741565f6521b771 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/PersonsView.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/PersonsView.java
@@ -79,38 +79,38 @@ public class PersonsView extends LayoutContainer
         List<ColumnConfig> configs = new ArrayList<ColumnConfig>();
 
         ColumnConfig codeColumnConfig = new ColumnConfig();
-        codeColumnConfig.setId("userId");
+        codeColumnConfig.setId(PersonModel.USER_ID);
         codeColumnConfig.setHeader("User ID");
         codeColumnConfig.setWidth(COL_PERSON_ID);
         configs.add(codeColumnConfig);
 
         ColumnConfig firstNameColumnConfig = new ColumnConfig();
-        firstNameColumnConfig.setId("firstName");
+        firstNameColumnConfig.setId(PersonModel.FIRST_NAME);
         firstNameColumnConfig.setHeader("First Name");
         firstNameColumnConfig.setWidth(COL_FIRST_NAME);
         configs.add(firstNameColumnConfig);
 
         ColumnConfig lastNameColumnConfig = new ColumnConfig();
-        lastNameColumnConfig.setId("lastName");
+        lastNameColumnConfig.setId(PersonModel.LAST_NAME);
         lastNameColumnConfig.setHeader("Last Name");
         lastNameColumnConfig.setWidth(COL_LAST_NAME);
         configs.add(lastNameColumnConfig);
 
         ColumnConfig emailNameColumnConfig = new ColumnConfig();
-        emailNameColumnConfig.setId("email");
+        emailNameColumnConfig.setId(PersonModel.EMAIL);
         emailNameColumnConfig.setHeader("Email");
         emailNameColumnConfig.setWidth(COL_EMAIL);
         configs.add(emailNameColumnConfig);
 
         ColumnConfig registratorColumnConfig = new ColumnConfig();
-        registratorColumnConfig.setId("registrator");
+        registratorColumnConfig.setId(PersonModel.REGISTRATOR);
         registratorColumnConfig.setHeader("Registrator");
         registratorColumnConfig.setWidth(COL_PERSON);
         registratorColumnConfig.setRenderer(new PersonRenderer());
         configs.add(registratorColumnConfig);
 
         ColumnConfig registrationDateColumnConfig = new ColumnConfig();
-        registrationDateColumnConfig.setId("registrationDate");
+        registrationDateColumnConfig.setId(PersonModel.REGISTRATION_DATE);
         registrationDateColumnConfig.setHeader("Registration Date");
         registrationDateColumnConfig.setWidth(COL_DATE);
         registrationDateColumnConfig.setDateTimeFormat(DateTimeFormat.getShortDateFormat());
@@ -148,7 +148,8 @@ public class PersonsView extends LayoutContainer
 
         ToolBar toolBar = new ToolBar();
         toolBar.add(new LabelToolItem("Filter:"));
-        toolBar.add(new AdapterToolItem(new ColumnFilter<PersonModel>(store, "userId", "user id")));
+        toolBar.add(new AdapterToolItem(new ColumnFilter<PersonModel>(store, PersonModel.USER_ID,
+                "user id")));
         toolBar.add(new SeparatorToolItem());
         toolBar.add(new AdapterToolItem(addPersonButton));
 
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/RoleModel.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/RoleModel.java
index 7de31f2dfd4db343995640c396c2c28b26260dcd..28834e85f5602f5203627f99069ddf623cb43a0b 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/RoleModel.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/RoleModel.java
@@ -28,14 +28,22 @@ import ch.systemsx.cisd.openbis.generic.client.web.client.dto.RoleAssignment;
  */
 public class RoleModel extends BaseModelData
 {
-    private static final long serialVersionUID = 1L;
+    static final String GROUP = "group";
+
+    static final String PERSON = "person";
+
+    static final String ROLE = "role";
+
+    static final String INSTANCE = "instance";
+
+    static final long serialVersionUID = 1L;
 
     public RoleModel(RoleAssignment role)
     {
-        set("group", role.getGroup() != null ? role.getGroup().getCode() : "");
-        set("person", role.getPerson().getUserId());
-        set("role", role.getCode());
-        set("instance", role.getInstance() != null ? role.getInstance().getCode() : "");
+        set(GROUP, role.getGroup() != null ? role.getGroup().getCode() : "");
+        set(PERSON, role.getPerson().getUserId());
+        set(ROLE, role.getCode());
+        set(INSTANCE, role.getInstance() != null ? role.getInstance().getCode() : "");
     }
 
 }
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/RolesView.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/RolesView.java
index c5a82d691b6704ea732bafd8165b3e43935c11b3..2e60978b3a20bb31944369604bc69d835c0fee77 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/RolesView.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/RolesView.java
@@ -72,25 +72,25 @@ public class RolesView extends LayoutContainer
         List<ColumnConfig> configs = new ArrayList<ColumnConfig>();
 
         ColumnConfig userIdColumnConfig = new ColumnConfig();
-        userIdColumnConfig.setId("person");
+        userIdColumnConfig.setId(RoleModel.PERSON);
         userIdColumnConfig.setHeader("Person");
         userIdColumnConfig.setWidth(COL_PERSON);
         configs.add(userIdColumnConfig);
 
         ColumnConfig groupColumnConfig = new ColumnConfig();
-        groupColumnConfig.setId("group");
+        groupColumnConfig.setId(RoleModel.GROUP);
         groupColumnConfig.setHeader("Group");
         groupColumnConfig.setWidth(COL_GROUP);
         configs.add(groupColumnConfig);
 
         ColumnConfig instanceColumnConfig = new ColumnConfig();
-        instanceColumnConfig.setId("instance");
+        instanceColumnConfig.setId(RoleModel.INSTANCE);
         instanceColumnConfig.setHeader("Database Instance");
         instanceColumnConfig.setWidth(COL_DB_INSTANCE);
         configs.add(instanceColumnConfig);
 
         ColumnConfig roleColumnConfig = new ColumnConfig();
-        roleColumnConfig.setId("role");
+        roleColumnConfig.setId(RoleModel.ROLE);
         roleColumnConfig.setHeader("Role");
         roleColumnConfig.setWidth(COL_ROLE);
         configs.add(roleColumnConfig);
@@ -139,26 +139,30 @@ public class RolesView extends LayoutContainer
                                         roleList.refresh();
                                     }
                                 };
-                    if (StringUtils.isBlank((String) rm.get("group")))
+                    if (StringUtils.isBlank((String) rm.get(RoleModel.GROUP)))
                     {
-                        viewContext.getService().deleteInstanceRole((String) rm.get("role"),
-                                (String) rm.get("person"), roleListRefreshCallback);
+                        viewContext.getService().deleteInstanceRole(
+                                (String) rm.get(RoleModel.ROLE), (String) rm.get(RoleModel.PERSON),
+                                roleListRefreshCallback);
                     } else
                     {
-                        viewContext.getService().deleteGroupRole((String) rm.get("role"),
-                                (String) rm.get("group"), (String) rm.get("person"),
-                                roleListRefreshCallback);
+                        viewContext.getService().deleteGroupRole((String) rm.get(RoleModel.ROLE),
+                                (String) rm.get(RoleModel.GROUP),
+                                (String) rm.get(RoleModel.PERSON), roleListRefreshCallback);
                     }
                 }
             });
 
         ToolBar toolBar = new ToolBar();
         toolBar.add(new LabelToolItem("Filter:"));
-        toolBar.add(new AdapterToolItem(new ColumnFilter<RoleModel>(store, "person", "person")));
-        toolBar.add(new AdapterToolItem(new ColumnFilter<RoleModel>(store, "group", "group")));
+        toolBar.add(new AdapterToolItem(new ColumnFilter<RoleModel>(store, RoleModel.PERSON,
+                "person")));
+        toolBar.add(new AdapterToolItem(
+                new ColumnFilter<RoleModel>(store, RoleModel.GROUP, "group")));
+        toolBar.add(new AdapterToolItem(new ColumnFilter<RoleModel>(store, RoleModel.INSTANCE,
+                "instance")));
         toolBar
-                .add(new AdapterToolItem(new ColumnFilter<RoleModel>(store, "instance", "instance")));
-        toolBar.add(new AdapterToolItem(new ColumnFilter<RoleModel>(store, "role", "role")));
+                .add(new AdapterToolItem(new ColumnFilter<RoleModel>(store, RoleModel.ROLE, "role")));
         toolBar.add(new SeparatorToolItem());
         toolBar.add(new AdapterToolItem(addRoleButton));
         toolBar.add(new SeparatorToolItem());
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/sample_browser/GroupSelectionWidget.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/sample_browser/GroupSelectionWidget.java
index 9ad317d9da45e8a5ab4dbfc685a9029737e288db..e2f7f103c334f5432ff80613ca8341223ee112df 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/sample_browser/GroupSelectionWidget.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/sample_browser/GroupSelectionWidget.java
@@ -24,7 +24,7 @@ import com.extjs.gxt.ui.client.widget.form.ComboBox;
 
 import ch.systemsx.cisd.openbis.generic.client.web.client.application.AbstractAsyncCallback;
 import ch.systemsx.cisd.openbis.generic.client.web.client.application.GenericViewContext;
-import ch.systemsx.cisd.openbis.generic.client.web.client.application.ui.amc.GroupModel;
+import ch.systemsx.cisd.openbis.generic.client.web.client.application.ui.GroupModel;
 import ch.systemsx.cisd.openbis.generic.client.web.client.dto.Group;
 
 class GroupSelectionWidget extends ComboBox<GroupModel>
@@ -39,7 +39,7 @@ class GroupSelectionWidget extends ComboBox<GroupModel>
 
         this.viewContext = viewContext;
         setEmptyText("Select a group...");
-        setDisplayField("code");
+        setDisplayField(GroupModel.CODE);
         setAllowBlank(false);
         setEditable(false);
         groupStore = new ListStore<GroupModel>();
@@ -52,7 +52,7 @@ class GroupSelectionWidget extends ComboBox<GroupModel>
         final List<GroupModel> selection = getSelection();
         if (selection.size() > 0)
         {
-            return selection.get(0).get("object");
+            return selection.get(0).get(GroupModel.OBJECT);
         } else
         {
             return null;
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/sample_browser/SampleTypeModel.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/sample_browser/SampleTypeModel.java
index 05444b70c79a3b71dd09e4674df6ceb3dfc69bff..1609b28ba6eb6ce75ac1f899c8e6000eaed2c9a8 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/sample_browser/SampleTypeModel.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/sample_browser/SampleTypeModel.java
@@ -26,12 +26,16 @@ import ch.systemsx.cisd.openbis.generic.client.web.client.dto.SampleType;
 public class SampleTypeModel extends BaseModelData
 {
 
-    private static final long serialVersionUID = 1L;
+    static final String OBJECT = "object";
+
+    static final String CODE = "code";
+
+    static final long serialVersionUID = 1L;
 
     public SampleTypeModel(SampleType sampleType)
     {
-        set("code", sampleType.getCode());
-        set("object", sampleType);
+        set(CODE, sampleType.getCode());
+        set(OBJECT, sampleType);
     }
 
 }
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/sample_browser/SampleTypeSelectionWidget.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/sample_browser/SampleTypeSelectionWidget.java
index f32dae19faffd638dcce380d7aaaa95aa5950ff3..ee9e087ae19cbf0318f107f09102c855d0298e50 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/sample_browser/SampleTypeSelectionWidget.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/sample_browser/SampleTypeSelectionWidget.java
@@ -38,7 +38,7 @@ class SampleTypeSelectionWidget extends ComboBox<SampleTypeModel>
 
         this.viewContext = viewContext;
         setEmptyText("Select a sample type...");
-        setDisplayField("code");
+        setDisplayField(SampleTypeModel.CODE);
         setAllowBlank(false);
         setEditable(false);
         sampleTypeStore = new ListStore<SampleTypeModel>();
@@ -51,7 +51,7 @@ class SampleTypeSelectionWidget extends ComboBox<SampleTypeModel>
         final List<SampleTypeModel> selection = getSelection();
         if (selection.size() > 0)
         {
-            return selection.get(0).get("object");
+            return selection.get(0).get(SampleTypeModel.OBJECT);
         } else
         {
             return null;
diff --git a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/CheckGroup.java b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/CheckGroup.java
index dbc00e105edbdacf05d4813ec64aff73f7461402..5436884470fbffc865c417333e8b4c1d0575c4a6 100644
--- a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/CheckGroup.java
+++ b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/amc/CheckGroup.java
@@ -22,6 +22,7 @@ import com.extjs.gxt.ui.client.store.ListStore;
 import com.extjs.gxt.ui.client.widget.grid.Grid;
 import com.google.gwt.user.client.ui.Widget;
 
+import ch.systemsx.cisd.openbis.generic.client.web.client.application.ui.GroupModel;
 import ch.systemsx.cisd.openbis.generic.client.web.client.testframework.AbstractDefaultTestCommand;
 import ch.systemsx.cisd.openbis.generic.client.web.client.testframework.GWTTestUtil;