// return_value_policy<copy_const_reference>()))
.add_property("annotations", &SeqSpan::annotations,
&SeqSpan::setAnnotations)
+ .add_property("drawable", &SeqSpan::drawable, &SeqSpan::setDrawable)
.add_property("start", &SeqSpan::start, &SeqSpan::setStart,
"start position relative to root sequence")
.add_property("stop", &SeqSpan::stop, &SeqSpan::setStop,