使用 AsyncReadManager，可以通过 Unity 的虚拟文件系统执行异步 I/O 操作。可以在任何线程或作业上执行这些操作。
| CloseCachedFileAsync | Closes a file held open internally by the AsyncReadManager. |
| GetFileInfo | Gets information about a file. |
| OpenFileAsync | Opens the file asynchronously. |
| Read | 发出一个异步文件读取操作。返回 ReadHandle。 |
| ReadDeferred | Queues a set of read operations for a file once the specified Jobs have completed. |