MEDYAN.fila_node_mids
Tuple{MEDYAN.Context, MEDYAN.FilaIdx}
Return the node_mids
of the filament.
The node_mids
are the monomer ids at (slightly plus side of) the node_positions
The first monomer id is the first monomer id on the filament. The last monomer id is the last monomer id on the filament + 1