public static void UpdateMleaderBlockSubst(this BlockTableRecord acBlkTblLRec, MLeader mLeader, Entity ent,
Document acCurDoc, Editor acCurEd)
{
acBlkTblLRec?.UpdateMleaderAttributeBySubstitution(mLeader, EnumAgent.GetNameOf(Enums.Substitution.Part),
ent.GetPartName(), acCurDoc, acCurEd);
//TODO finish adding substitutions
}