}
        }

        return results;
    }

    @Override
    public ArtifactResult resolveArtifact(RepositorySystemSession session, ArtifactRequest request)
            throws ArtifactResolutionException {
        return resolveArtifacts(session, Collections.singleton(request)).get(0);
    }

        ArtifactResult artifactResult = system.resolveArtifact(session, artifactRequest);
        checkArtifactResult(artifactResult, "artifact-1.0.jar");

        artifact = new DefaultArtifact("ut.simple:artifact:zip:1.0");
        artifactRequest.setArtifact(artifact);
        artifactResult = system.resolveArtifact(session, artifactRequest);
        checkArtifactResult(artifactResult, "artifact-1.0.zip");

        this.resolvedArtifacts = resolvedArtifacts;
        this.missingArtifacts = missingArtifacts;
    }

    /**
     * artifacts that could be resolved
     *
     * @return {@link List} of {@link Artifact}
     */
    public List<Artifact> getResolvedArtifacts() {
        return resolvedArtifacts;
    }

    /**
     * artifacts that could NOT be resolved