public static PsiReference[] getReferences(PsiElement element, boolean isSoft) {
    TextRange textRange = ElementManipulators.getValueTextRange(element);
    if (textRange.isEmpty()) return PsiReference.EMPTY_ARRAY;

    String text = element.getText();

    if (StringUtil.isEmptyOrSpaces(text)) return PsiReference.EMPTY_ARRAY;

    if (!isElementCanContainReference(element)) return PsiReference.EMPTY_ARRAY;

    if (XmlSuppressionProvider.isSuppressed(element, UNRESOLVED_MAVEN_PROPERTY_QUICKFIX_ID)) return PsiReference.EMPTY_ARRAY;

    MavenProject mavenProject = null;
    XmlTag propertiesTag = null;
    List<PsiReference> result = null;

    Matcher matcher = MavenPropertyResolver.PATTERN.matcher(textRange.substring(text));
    while (matcher.find()) {
      String propertyName = matcher.group(1);
      int from;
      if (propertyName == null) {
        propertyName = matcher.group(2);
        from = matcher.start(2);
      }
      else {
        from = matcher.start(1);
      }

      TextRange range = TextRange.from(textRange.getStartOffset() + from, propertyName.length());

      if (result == null) {
        result = new ArrayList<>();

        mavenProject = findMavenProject(element);
        if (mavenProject == null) {
          propertiesTag = findPropertiesParentTag(element);
          if (propertiesTag == null) {
            return PsiReference.EMPTY_ARRAY;
          }
        }
      }

      PsiReference ref;
      if (mavenProject != null) {
        ref = new MavenPropertyPsiReference(mavenProject, element, propertyName, range, isSoft);
      }
      else {
        ref = new MavenContextlessPropertyReference(propertiesTag, element, range, true);
      }

      result.add(ref);
    }

    return result == null ? PsiReference.EMPTY_ARRAY : result.toArray(PsiReference.EMPTY_ARRAY);
  }
public static PsiReference[] getReferences(PsiElement element, boolean isSoft)