/// <summary>
/// Gets the family symbol's raw location, it's for moving zero point.
/// </summary>
/// <param name="profile"></param>
/// <returns></returns>
private static XYZ GetLocationPoint(CurveArrArray profile)
{
if (profile == null)
{
throw new ArgumentNullException(nameof(profile));
}
var curves = profile.Cast <CurveArray>().SelectMany(s => s.Cast <Curve>()).ToList();
var pts = curves.GetDistinctPointList()
.OrderBy(o => o.Z).ThenBy(o => o.Y).ThenBy(o => o.X).ToList();
return(pts.FirstOrDefault());
}