private static PsiReference @NotNull [] getSinglePropertyReferences(@NotNull XmlAttributeValue xmlAttributeValue,
                                                                      @NotNull String value,
                                                                      @NotNull Map<String, XmlAttributeValue> fileIds) {
    if (FxmlConstants.isNullValue(value)) return PsiReference.EMPTY_ARRAY;
    return getSinglePropertyReferences(xmlAttributeValue, fileIds, value.substring(1), 1);
  }
private static PsiReference @NotNull [] getSinglePropertyReferences(@NotNull XmlAttributeValue xmlAttributeValue,
                                                                      @NotNull String value,
                                                                      @NotNull Map<String, XmlAttributeValue> fileIds)