File snippets that support the creation of custom Sitecore Content Editor button commands to collapse and expand field section accordions

CollapseAllCommand.cs

using Sitecore.Shell.Framework.Commands;

namespace TheCodeAttic.CustomContentEditorButtons
{
    public class CollapseAllCommand : Command
    {
        public override void Execute(CommandContext context)
        {            
            Sitecore.Context.ClientPage.ClientResponse.Eval("TheCodeAttic_CollapseAll();");
        }
    }
}