This class is a class that inherits from the TestFlow interface,
which is the base class for state patterns.
TestFlow has a primitive implementation by passing through State.
This provides an implementation for the update declared in
the interface to return the next state specified in setNext.
And some handlers [onEnter, onExit, onEnterChild, onExitChild]
are available.
Base class of state pattern
This class is a class that inherits from the TestFlow interface, which is the base class for state patterns. TestFlow has a primitive implementation by passing through State. This provides an implementation for the update declared in the interface to return the next state specified in setNext. And some handlers [onEnter, onExit, onEnterChild, onExitChild] are available.