When creating a new component, it's important to see if it's the first component (if rootComponent is null).
在创建新组件时，需要了解它是否是第一个组件（如果 rootComponent 为空）。
Next, continue the top-down development approach by beginning to implement the mediation flow component by creating a new implementation.
接下来，继续进行自上而下的开发方式，通过创建一个新的实现来开始实现中介流组件。
When you click the button, context switches to the sales lead application, and the component invokes the UI for creating a new sales lead and populates it with the available information.
当单击这个按钮时，将切换到潜在客户应用程序，同时组件调用 UI 创建新的潜在客户并使用可用信息进行填充。
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