| packageIdOrName | 包的名称或 ID。 |
SearchRequest 一个 SearchRequest 实例，可用于监控异步操作，并在操作完成时获取结果。
搜索 Unity 包注册表以获取给定的包。
This operation issues a request to the official Unity package registry. You can also browse the available packages at the following url: https://bintray.com/unity/unity