@utils.synchronized(SERIAL_LOCK)
def release_port(host, port):
    ALLOCATED_PORTS.discard((host, port))
Constructs a new Tabsheet. Tabsheet is immediate by default, and
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/console/serial.py/release_port--crossover with--dataset/ETHPy150Open rwl/muntjac/muntjac/ui/tab_sheet.py/TabSheet.__init__