When modeling a sequence diagram, there will be times that an object will need to send a message to itself.
当序列图建模时，有时候，一个对象将会需要传递一个消息给它本身。
If another object had been included, the diagram would be blurred in its focus and message.
如果包括了其他对象，关系图将在其重点及其要传达的信息方面就会变得模糊。
In this diagram, the "qualifications " message likely represents a series of messages sent to the Student object.
在本图中，“qualifications ”消息可能表示发送到Student对象的一系列消息。
In this diagram, the "qualifications " message likely represents a series of messages sent to the Student object.
在本图中，“qualifications ”消息可能表示发送到Student对象的一系列消息。
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