private NecessaryAccessorsVisitor checkNecessaryGettersSetters4SourceClass() {
    final NecessaryAccessorsVisitor visitor =
        new NecessaryAccessorsVisitor() {
          @Override
          protected boolean hasGetterOrSetter(PsiMethod[] getters) {
            for (PsiMethod getter : getters) {
              if (!isInMovedElement(getter)) return true;
            }
            return false;
          }

          @Override
          protected boolean isProhibitedReference(PsiField field) {
            if (fields.contains(field)) {
              return false;
            }
            if (innerClasses.contains(field.getContainingClass())) {
              return false;
            }
            return true;
          }
        };
    for (PsiField field : fields) {
      field.accept(visitor);
    }
    for (PsiMethod method : methods) {
      method.accept(visitor);
    }
    for (PsiClass innerClass : innerClasses) {
      innerClass.accept(visitor);
    }
    return visitor;
  }
 public ExtractClassProcessor(
     PsiClass sourceClass,
     List<PsiField> fields,
     List<PsiMethod> methods,
     List<PsiClass> classes,
     String packageName,
     MoveDestination moveDestination,
     String newClassName,
     String newVisibility,
     boolean generateAccessors,
     List<MemberInfo> enumConstants) {
   super(sourceClass.getProject());
   this.sourceClass = sourceClass;
   this.newPackageName = packageName;
   myMoveDestination = moveDestination;
   myNewVisibility = newVisibility;
   myGenerateAccessors = generateAccessors;
   this.enumConstants = new ArrayList<PsiField>();
   for (MemberInfo constant : enumConstants) {
     if (constant.isChecked()) {
       this.enumConstants.add((PsiField) constant.getMember());
     }
   }
   this.fields = new ArrayList<PsiField>(fields);
   this.methods = new ArrayList<PsiMethod>(methods);
   this.innerClasses = new ArrayList<PsiClass>(classes);
   this.newClassName = newClassName;
   delegateFieldName = calculateDelegateFieldName();
   requiresBackpointer =
       new BackpointerUsageVisitor(fields, innerClasses, methods, sourceClass)
           .backpointerRequired();
   if (requiresBackpointer) {
     ContainerUtil.addAll(typeParams, sourceClass.getTypeParameters());
   } else {
     final Set<PsiTypeParameter> typeParamSet = new HashSet<PsiTypeParameter>();
     final TypeParametersVisitor visitor = new TypeParametersVisitor(typeParamSet);
     for (PsiField field : fields) {
       field.accept(visitor);
     }
     for (PsiMethod method : methods) {
       method.accept(visitor);
       // do not include method's type parameters in class signature
       typeParamSet.removeAll(Arrays.asList(method.getTypeParameters()));
     }
     typeParams.addAll(typeParamSet);
   }
   myClass =
       new WriteCommandAction<PsiClass>(myProject, getCommandName()) {
         @Override
         protected void run(@NotNull Result<PsiClass> result) throws Throwable {
           result.setResult(buildClass());
         }
       }.execute().getResultObject();
   myExtractEnumProcessor = new ExtractEnumProcessor(myProject, this.enumConstants, myClass);
 }