The example looks up the add method chain.
本例查找add方法链。
Starts the method chain by creating a new Appointment instance.
通过创建一个新的Appointment实例开始方法链接。
Method chaining works best for the creation of simple data objects, yet here I'm using it both for the setter methods on Appointment and in AppointmentCalendar to start the method chain.
方法链接对于简单数据对象的创建最有效，但是这里我同时为Appointment上和AppointmentCalendar中的setter方法启用方法链接。
Method chaining works best for the creation of simple data objects, yet here I'm using it both for the setter methods on Appointment and in AppointmentCalendar to start the method chain.
方法链接对于简单数据对象的创建最有效，但是这里我同时为Appointment上和AppointmentCalendar中的setter方法启用方法链接。
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