A composite state can also have a default transition with no operation.
组合状态还可以具有不带操作的缺省转换。
By default, the transition type is set to Automatic, which is what you want.
缺省情况下，转换类型设置为Automatic，这是我们所需要的类型。
By default, the transition type is set to Automatic, which is what you want.
缺省情况下，转换类型设置为Automatic，这是我们所需要的类型。
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