update checkstyle

Author: SirCotare

checkstyle-suppressions.xml

@@ -6,11 +6,11 @@
 
 <suppressions>
     <suppress checks="Javadoc" files="."/>
-    <suppress checks="JavadocPackage" files="."/>
-    <suppress checks="DesignForExtension" files="."/>
-    <suppress checks="LineLength" files="."/>
+    <!--<suppress checks="JavadocPackage" files="."/>-->
+    <!--<suppress checks="DesignForExtension" files="."/>-->
+    <!--<suppress checks="LineLength" files="."/>-->
     <suppress checks="MethodName" files=".*[\\/]src[\\/](test|it)[\\/]"/>
     <suppress checks="VisibilityModifier" files=".*[\\/]src[\\/](test|it)[\\/]"/>
-    <suppress checks="FinalParameters" files=".*[\\/]src[\\/](test|it)[\\/]"/>
+    <!--<suppress checks="FinalParameters" files=".*[\\/]src[\\/](test|it)[\\/]"/>-->
     <suppress checks="FileTabCharacter" files=".*[\\/]src[\\/](test|it)[\\/]"/>
 </suppressions>

checkstyle.xml

@@ -60,7 +60,7 @@
 
     <!-- Checks that a package-info.java file exists for each package.     -->
     <!-- See https://checkstyle.org/config_javadoc.html#JavadocPackage -->
-    <module name="JavadocPackage"/>
+    <!--<module name="JavadocPackage"/>-->
 
     <!-- Checks whether files end with a new line.                        -->
     <!-- See https://checkstyle.org/config_misc.html#NewlineAtEndOfFile -->
@@ -73,9 +73,9 @@
     <!-- Checks for Size Violations.                    -->
     <!-- See https://checkstyle.org/config_sizes.html -->
     <module name="FileLength"/>
-    <module name="LineLength">
+    <!--<module name="LineLength">
         <property name="fileExtensions" value="java"/>
-    </module>
+    </module>-->
 
     <!-- Checks for whitespace                               -->
     <!-- See https://checkstyle.org/config_whitespace.html -->
@@ -182,11 +182,13 @@
 
         <!-- Checks for class design                         -->
         <!-- See https://checkstyle.org/config_design.html -->
-        <module name="DesignForExtension"/>
+        <!--<module name="DesignForExtension"/>-->
         <module name="FinalClass"/>
         <module name="HideUtilityClassConstructor"/>
         <module name="InterfaceIsType"/>
-        <module name="VisibilityModifier"/>
+        <module name="VisibilityModifier">
+            <property name="protectedAllowed" value="true"/>
+        </module>
 
         <!-- Miscellaneous other checks.                   -->
         <!-- See https://checkstyle.org/config_misc.html -->