def METHOD_NAME(self):
    # Add the full report
    out = collections.defaultdict(list)
    out[("all", "all")] = [artifact.path for artifact in self.artifacts]
    # Group by suite first
    suites = itertools.groupby(
        sorted(self.artifacts, key=lambda a: a.suite), lambda a: a.suite
    )
    for suite, artifacts in suites:
        artifacts = list(artifacts)
        # List all available platforms
        platforms = {a.platform for a in artifacts}
        platforms.add("all")
        # And list all possible permutations with suite + platform
        out[("all", suite)] += [artifact.path for artifact in artifacts]
        for platform in platforms:
            if platform != "all":
                out[(platform, "all")] += [
                    artifact.path
                    for artifact in artifacts
                    if artifact.platform == platform
                ]
            out[(platform, suite)] = [
                artifact.path
                for artifact in artifacts
                if platform == "all" or artifact.platform == platform
            ]
    return out