Whether a workstation is running and ready to receive user
requests.
Values:
STATE_UNSPECIFIED (0):
Do not use.
STATE_STARTING (1):
The workstation is not yet ready to accept
requests from users but will be soon.
STATE_RUNNING (2):
The workstation is ready to accept requests
from users.
STATE_STOPPING (3):
The workstation is being stopped.
STATE_STOPPED (4):
The workstation is stopped and will not be
able to receive requests until it is started.
