public DxfEntitiesSection(DxfFile parentFile) { Entities = new ListWithPredicates <DxfEntity>(item => { if (item is DxfInsert insert && insert.Name != null) { insert.GetEntities = () => parentFile.EntitiesFromBlock(insert.Name); } return(item != null); }, 0); AdditionalObjects = new List <DxfObject>(); }