借助导航网格构建标记，您可以控制导航网格构建过程中（特别是收集构建来源时）特定对象的处理方式。
You can override the area type or specify that certain objects should be excluded from collected sources. The markup can be applied hierarchically or to only the specified object. See Also: NavMeshBuilder.CollectSources.
| applyToChildren | Use this to specify if the GameObject's children also use these markup settings. |
| area | 启用覆盖区域时使用的区域类型。 |
| generateLinks | Use this to specify whether the GameObject and its children should be included in the link generation process. |
| ignoreFromBuild | 使用此属性指定是否应忽略游戏对象及其子项。 |
| overrideArea | 使用此属性指定游戏对象及其子项的区域类型是否应被此结构中指定的区域类型覆盖。 |
| overrideGenerateLinks | Use this to specify whether the default links generation condition for the GameObject and its children should be overridden by the generateLinks option specified in this struct. |
| overrideIgnore | Set this to true in order to enable the ignoreFromBuild property. |
| root | 使用此属性指定应将标记应用于哪个游戏对象（包括游戏对象的子项）。 |