protected boolean use15Suppressions(@NotNull PsiJavaDocumentedElement container) {
    return JavaSuppressionUtil.canHave15Suppressions(container) &&
           !JavaSuppressionUtil.alreadyHas14Suppressions(container) &&
           !isInjectedToStringLiteral(container); // quotes will be imbalanced when insert annotation value in quotes into literal expression
  }
protected boolean use15Suppressions(@NotNull PsiJavaDocumentedElement container)