@Override
  public void updateToolWindowDocumentationTabName(@NotNull ToolWindow toolWindow,
                                                   @NotNull PsiElement element,
                                                   @NotNull DocumentationManager documentationManager) {
    Content content = getDocumentationContent(toolWindow, documentationManager);
    if (content != null) content.setDisplayName(documentationManager.getTitle(element));
  }
@Override
  public void updateToolWindowDocumentationTabName(@NotNull ToolWindow toolWindow,
                                                   @NotNull PsiElement element,
                                                   @NotNull DocumentationManager documentationManager)