public override void CopyFrom(DxfHandledObject from, CloneContext cloneContext)
        {
            base.CopyFrom(from, cloneContext);
            DxfToleranceObjectContextData objectContextData = (DxfToleranceObjectContextData)from;

            this.point3D_0  = objectContextData.InsertionPoint;
            this.vector3D_0 = objectContextData.XAxis;
        }
        public override IGraphCloneable Clone(CloneContext cloneContext)
        {
            DxfToleranceObjectContextData objectContextData = (DxfToleranceObjectContextData)cloneContext.GetExistingClone((IGraphCloneable)this);

            if (objectContextData == null)
            {
                objectContextData = new DxfToleranceObjectContextData();
                cloneContext.RegisterClone((IGraphCloneable)this, (IGraphCloneable)objectContextData);
                objectContextData.CopyFrom((DxfHandledObject)this, cloneContext);
            }
            return((IGraphCloneable)objectContextData);
        }