You can submit patches byusing [Phabricator]. Walk through its documentation in how toset it up, and uploading patches for review. Don't worry about which
person toselectfor reviewing your code. It will be done automatically.
Please also make sure to follow the [commit creation guidelines].
Once you have contributed a couple of patches, we are happy to sponsor you in
[becoming a Mozilla committer]. When you have been granted commit access
level 1, you will have permission touse the [Firefox CI] totrigger your own
“try runs” to test your changes. You can use the following [try preset] to run
the most relevant tests:
```shell
% ./mach try --preset geckodriver
```
This preset will schedule geckodriver-related tests on various platforms. You can
reduce the number of tasks by filtering on platforms (e.g. linux) or build type
(e.g. opt):