Fix violations

Author: pnatashap

config/checkstyle/checkstyle.xml

@@ -354,7 +354,7 @@
   </module>
   <module name="RegexpSingleline">
     <property name="severity" value="error" />
-    <property name="format" value="throw new " />
+    <property name="format" value="throw new RuntimeExc" />
     <property name="message" value="Use `throw runtimeException('Error Message')` or `throw exception('Error message')`" />
     <property name="id" value="MatcherThrowingExceptions_Error" />
     <property name="fileExtensions" value="java"/>

jdi-light-vuetify/src/main/java/com/epam/jdi/light/vuetify/elements/complex/TreeViewNode.java

@@ -122,7 +122,6 @@ public UIElement iCore() {
     @Override
     @JDIAction("Get '{name}' text value")
     public String getValue() {
-
         return iCore().getText();
     }
 
@@ -140,7 +139,6 @@ public int size() {
 
     @JDIAction("Get '{name}' check list")
     public WebList checkList() {
-
         return new WebList();
     }
 
@@ -352,7 +350,7 @@ public void refresh() {
 
     @Override
     public void clear() {
-        throw new UnsupportedOperationException();
+        throw runtimeException("Clear operation is not supported by TreeViewNode");
     }
 
     protected TreeViewNode create(UIElement base) {

jdi-light-vuetify/src/main/java/com/epam/jdi/light/vuetify/elements/complex/tables/DataTable.java

@@ -202,7 +202,7 @@ public void groupBy(String colName) {
                 return;
             }
         }
-
+        // @todo add a public method to check if grouping by column is available
         //check if it is already grouped by
         if (groups.isEmpty()) {
             throw runtimeException(String.format("Grouping by column '%s' is not available", colName));