private @Nullable ProblemDescriptor getStripIsEmptyProblem(PsiMethodCallExpression call) {
      PsiMethodCallExpression qualifierCall = MethodCallUtils.getQualifierMethodCall(call);
      if (!STRING_STRIP.test(qualifierCall)) return null;
      PsiElement anchor = qualifierCall.getMethodExpression().getReferenceNameElement();
      if (anchor == null) return null;
      String message = InspectionGadgetsBundle.message("inspection.x.call.can.be.replaced.with.y", "isBlank");
      return myManager.createProblemDescriptor(anchor, (TextRange)null, message, ProblemHighlightType.GENERIC_ERROR_OR_WARNING, myIsOnTheFly,
                                               new StripIsEmptyToIsBlankFix());
    }
private @Nullable ProblemDescriptor getStripIsEmptyProblem(PsiMethodCallExpression call)