missingArtifacts.add(artifact);

        return this;
    }

    public MetadataResolutionResult setUnresolvedArtifacts(final List<Artifact> unresolvedArtifacts) {
        this.missingArtifacts = unresolvedArtifacts;

        return this;
    }

    // ------------------------------------------------------------------------
    // Exceptions

        missingArtifacts.add(artifact);

        return this;
    }

    public ArtifactResolutionResult setUnresolvedArtifacts(final List<Artifact> unresolvedArtifacts) {
        this.missingArtifacts = unresolvedArtifacts;

        return this;
    }

    public boolean isSuccess() {
        return !(hasMissingArtifacts() || hasExceptions());
    }