public PsiReference @NotNull [] getReferences(@NotNull HeaderValuePart headerValuePart) {
    Header header = PsiTreeUtil.getParentOfType(headerValuePart, Header.class);
    if (header != null) {
      HeaderParser parser = getHeaderParser(header.getName());
      if (parser != null) {
        return parser.getReferences(headerValuePart);
      }
    }

    return PsiReference.EMPTY_ARRAY;
  }
public PsiReference @NotNull [] getReferences(@NotNull HeaderValuePart headerValuePart)