public Object set(int index, Object obj) { if (this.getMyClass() != null && !obj.getClass().equals(this.getMyClass())) { throw new IllegalArgumentException( "bad class expecting " + this.getMyClass()); } return this.hlist.set(index, obj);
public Object set(int position, Object sipHdr) {  return hlist.set(position, sipHdr);
	public Object set(int index, Object obj) {		if (this.getMyClass() != null			&& !obj.getClass().equals(this.getMyClass())) {			throw new IllegalArgumentException(				"bad class expecting " + this.getMyClass());		}		return this.hlist.set(index, obj);	}