Common functionality for overridden kernels.
Inflection trait for the site alias manager.
Note: when using this trait, also implement ConfigAwareInterface/ConfigAwareTrait.
CliTestTrait provides an
execute() method that is useful
for launching executable programs in functional tests.
DrushTestTrait provides a
drush() method that may be
used to write functional tests for Drush extensions.
OutputUtilsTrait provides some useful utility methods for test classes