private static boolean methodContainsCallOnOtherInstance(PsiMethod method) {
      if (method.hasModifierProperty(PsiModifier.STATIC)) {
        return false;
      }
      final PsiCodeBlock body = method.getBody();
      if (body == null) {
        return false;
      }
      final PsiClass aClass = method.getContainingClass();
      final MethodContainsCallOnOtherInstanceVisitor visitor = new MethodContainsCallOnOtherInstanceVisitor(aClass);
      body.accept(visitor);
      return visitor.containsCallOnOtherInstance();
    }
private static boolean methodContainsCallOnOtherInstance(PsiMethod method)