Commit 30534b3

This message means that you're using content from a header file that is included indirectly. For example, you may be directly including a header file that also contains `#include <string>`. If you use `string` in your code, but don't `#include <string>` in that file, it works as long as the other header file continues to indirectly include `<string>` for you. This message identifies that this is going on in your code so that you can take action to directly include the transitively included header file. For more information, see [Direct vs indirect headers](include-cleanup-overview.md#direct-vs-indirect-headers).

This message indicates that the specified header file is not used in the current file. You can remove the associated `#include` directive to cleanup your includes and improve your build times.