code: public static final void assertMethodsNotUsed(final File classesDir, final FileFilter filter, final MCAMethod... methodsToFind) {
  
          Utils4J.checkNotNull("methodsToFind", methodsToFind);
          assertMethodsNotUsed(classesDir, filter, Arrays.asList(methodsToFind));
  
      }
docs: Asserts that a set of methods is not used.
  
  @param classesDir
  Directory with the ".class" files to check - Cannot be <code>null</code> and must be a valid directory.
  @param filter
  File filter or NULL (process all '*.class' files).
  @param methodsToFind
  List of methods to find.