minor: fix IntelijIdea violations 'Declaration can have final modifier', 'Method may be static'

src/test/java/com/puppycrawl/tools/checkstyle/BaseCheckTestSupport.java

@@ -90,7 +90,7 @@ public class BaseCheckTestSupport {
                 .toString();
     }
 
-    protected String getSrcPath(String filename) throws IOException {
+    protected static String getSrcPath(String filename) throws IOException {
         return new File("src/test/java/com/puppycrawl/tools/checkstyle/" + filename)
                 .getCanonicalPath();
     }
@@ -105,7 +105,7 @@ public class BaseCheckTestSupport {
         verifyAst(expectedTextPrintFileName, actualJavaFileName, false);
     }
 
-    protected void verifyAst(String expectedTextPrintFileName, String actualJavaFileName,
+    protected static void verifyAst(String expectedTextPrintFileName, String actualJavaFileName,
             boolean withComments) throws Exception {
         final String expectedContents = Files.toString(new File(expectedTextPrintFileName),
                 Charsets.UTF_8).replaceAll("\\\\r\\\\n", "\\\\n");

src/test/java/com/puppycrawl/tools/checkstyle/api/AutomaticBeanTest.java

@@ -146,5 +146,9 @@ public class AutomaticBeanTest {
             throw new IllegalStateException(privateField + "," + wrong + "," + val + "," + value);
         }
 
+        public void doSmth() {
+            privateField = "some value, just for fun";
+        }
+
     }
 }