def get_interface_name_from_hosting_port(self, port):
vlan = port['<STR_LIT>']['<STR_LIT>']<EOL>int_prefix = port['<STR_LIT>']['<STR_LIT>']<EOL>return '<STR_LIT>' % (int_prefix, vlan)<EOL>
generates the underlying subinterface name for a port
e.g. Port-channel10.200