It is a conditional transition.
这是一个条件迁移。
The Transitional Properties: Conditional Transition wizard displays. Do the following.
显示转换属性：条件转换向导。
A conditional transition is traversed if the condition is met, otherwise the default leg is taken. To create the transition, do the following.
如果条件满足，则遍历条件转换，否则采用缺省操作。
The third transition from the gate - another conditional transition - points to the BookRoom activity, in case the required type of room is available.
第三个迁移，从gate—另一个条件迁移—指向BookRoom活动，这时所需类型的房间是可入住的。
Next, we'll provide validation of the log-in by adding a conditional transition from the branch node to the Login view, which is used when the log-in is unsuccessful.
接下来，我们将通过添加从分支节点到Login视图的条件转换来提供登录验证，通常在没有成功登录时，使用这一操作。
The diamond shows that the transition is conditional.
菱形表示迁移是有条件的。
Each transition that enters the gate or leaves it knows its own properties (that is, whether it is simple or conditional).
每个进入gate或者离开gate的迁移都了解其自身属性(即，无论它是简单的或者条件的)。
Each transition that enters the gate or leaves it knows its own properties (that is, whether it is simple or conditional).
每个进入gate或者离开gate的迁移都了解其自身属性(即，无论它是简单的或者条件的)。
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