3rdpartylibs/fastreports.wpf/FastReport.Forms.WPF/Controls/GroupBox.cs

namespace System.Windows.Forms
{
    public class GroupBox : ContainerControl
    {
        protected new CustomControls.GroupBox control { get; }

        public override string Text
        {
            get => control.Header?.ToString();
            set => control.Header = value;
        }

        public GroupBox()
        {
            control = new();
            SetContentControl(control);
            Padding = new Padding(3); // match winforms default value
            DefaultPadding = new Padding(0, 12, 0, 0);
        }
    }
}