Class State (0.3.1) 

State(value)

Represents execution state of the action.

Values: UNKNOWN (0):

ACTION_SUCCEEDED (1):
    State indicating action executed
    successfully.
ACTION_FAILED (2):
    State indicating action failed.
ACTION_TIMED_OUT (3):
    State indicating action timed out.
ACTION_PENDING (4):
    State indicating action is pending.