public override string GetStepParameters()
        {
            var parameters = new List <string>();

            parameters.Add(TilingPattern != null ? TilingPattern.ToStepValue() : "$");
            parameters.Add(Tiles != null ? Tiles.ToStepValue() : "$");
            parameters.Add(TilingScale != null ? TilingScale.ToStepValue() : "$");

            return(string.Join(", ", parameters.ToArray()));
        }
 internal override void parse(string str, ref int pos, ReleaseVersion release, int len, ConcurrentDictionary <int, BaseClassIfc> dictionary)
 {
     TilingPattern.AddRange(ParserSTEP.StripListLink(str, ref pos, len).ConvertAll(x => dictionary[x] as IfcVector));
     Tiles.AddRange(ParserSTEP.StripListLink(str, ref pos, len).ConvertAll(x => dictionary[x] as IfcStyledItem));
     TilingScale = ParserSTEP.StripDouble(str, ref pos, len);
 }