Default duration used if an duration has not been specified for a specific
source/target state pair. The values is in milliseconds.
Optional state
state?:string
The currently set target state, setting it causes the
state machine to transition to the new state, use
clutter_state_warp_to_state() to change state without
a transition.
Default duration used if an duration has not been specified for a specific source/target state pair. The values is in milliseconds.