To illustrate this, let's first define a simple RectangularObject class, which exposes three key properties to the configuration API: the length, width, and height.
作为一个例子，首先定义简单的rectangularobject类，它向配置API公开了三个主要属性：长、宽和高。
To illustrate this, let's first define a simple RectangularObject class, which exposes three key properties to the configuration API: the length, width, and height.
作为一个例子，首先定义简单的rectangularobject类，它向配置API公开了三个主要属性：长、宽和高。
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