What must be retained by the business component handler is the identifier of a concrete business component identifier.

业务组件处理程序必须保留一个具体业务组件标识符的标识符。

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setMaterial() creates a new Material object and sets the colors with setColor() using the respective color component identifier.

setMaterial() 创建了一个新的 Material 对象，通过使用各颜色组件标识符的 setColor() 设置颜色。

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The document library stores the serialized business component identifier in its back end; a column in the corresponding table is reserved for this.

文档库在其后端存储序列化业务组件标识符；在相应的表中为其预留一个字段。

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