/// <summary>
/// Initializes the drag drop object's constraints to restrict movement to a certain element.
/// </summary>
/// <param name="constrainTo">The element to constrain to.</param>
/// <param name="pad">Pad provides a way to specify "padding" of the constraints</param>
/// <param name="inContent">Constrain the draggable in the content box of the element (inside padding and borders)</param>
public void ConstrainTo(string constrainTo, Paddings pad, bool inContent)
{
this.Call("constrainTo",
new JRawValue(string.Concat("Ext.net.getEl(", TokenUtils.ParseAndNormalize(constrainTo), ")")),
new JRawValue(pad.ToString()),
inContent);
}