Implements report, log, output XML, and xUnit file generation.
The public API of this package is the :class:~.ResultWriter class. It
can write result files based on XML output files on the file system,
as well as based on the result objects returned by
the :func:~robot.result.resultbuilder.ExecutionResult factory method or
an executed :class:~robot.running.model.TestSuite.
It is highly recommended to use the public API via the :mod:robot.api package.
This package is considered stable.