/// <summary>
/// Removes the custom toolbar button.
/// </summary>
/// <param name="toolbarButton">Button instance.</param>
internal protected void RemoveMarkdownToolbarButton(MarkdownToolbarButton toolbarButton)
{
toolbarButtons.Remove(toolbarButton);
}
/// <summary>
/// Adds the custom toolbar button.
/// </summary>
/// <param name="toolbarButton">Button instance.</param>
internal protected void AddMarkdownToolbarButton(MarkdownToolbarButton toolbarButton)
{
toolbarButtons ??= new();
toolbarButtons.Add(toolbarButton);
}