The only other method (set in italics) in the class is used to get a reference to the singleton and to create it if it is not yet instantiated.
该类中仅剩的另一个方法(用斜体标识)用于获取该单件的一个引用，如果尚未实例化则创建它。
For example, suppose that you create a set of reference topics.
例如，假设您创建了一组引用主题。
For instance, you can create design patterns for a how-to collection, a case study collection, and a reference set collection.
比如，可以分别为how - to集合、案例研究集合和参考设置集合创建设计模式。
If you are converting to a command reference topic, you will likely want to add a gen-cmdref template to set up your root element and create the major structures within the topic.
如果要转换到命令参考模板，则可以添加一个gen -cmdref模板建立根元素，并创建该主题中的主要结构。
Create an empty game object named PhysicsTest and add script PhysicsTest to it and set both, cube reference and initial velocity of it.
创建一个名为“物理测试”的空游戏对象并添加“物理测试”脚本，并设置它的方块引用和初始速度。
Create an empty game object named PhysicsTest and add script PhysicsTest to it and set both, cube reference and initial velocity of it.
创建一个名为“物理测试”的空游戏对象并添加“物理测试”脚本，并设置它的方块引用和初始速度。
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