}

    @TargetGradleVersion(">=3.0")
    def "Java project returns Java nature along with custom natures"() {
        given:
        buildFile << """
            apply plugin: 'java'
            apply plugin: 'eclipse'
            eclipse {
                project {
                    natures << 'sample.nature.a'

        return null;
    }

    public Nature getNature() {
        if (metadata instanceof RepositoryMetadata) {
            switch (((RepositoryMetadata) metadata).getNature()) {
                case RepositoryMetadata.RELEASE_OR_SNAPSHOT:
                    return Nature.RELEASE_OR_SNAPSHOT;
                case RepositoryMetadata.SNAPSHOT:
                    return Nature.SNAPSHOT;
                default:

        buildFile <<
        """apply plugin: 'java'
           apply plugin: 'eclipse'
           import org.gradle.plugins.ide.eclipse.model.BuildCommand

           eclipse.project {
               natures += ['nature.a']
               buildCommand 'command1', argumentKey: 'arg'
           }
        """

        when:
        EclipseProject project = loadToolingModel(EclipseProject)

        then:

        return artifact.getArtifactId();
    }

    @Override
    public String getVersion() {
        return "";
    }

    @Override
    public Nature getNature() {
        return artifact.isSnapshot() ? Nature.RELEASE_OR_SNAPSHOT : Nature.RELEASE;
    }

        return artifact.getArtifactId();
    }

    @Override
    public String getVersion() {
        return "";
    }

    @Override
    public Nature getNature() {
        return artifact.isSnapshot() ? Nature.RELEASE_OR_SNAPSHOT : Nature.RELEASE;
    }

        return metadata.getArtifactId();
    }

    @Override
    public String getVersion() {
        return metadata.getVersion();
    }

    @Override
    public Nature getNature() {
        return Nature.SNAPSHOT;
    }

        return metadata.getArtifactId();
    }

    @Override
    public String getVersion() {
        return metadata.getVersion();
    }

    @Override
    public Nature getNature() {
        return Nature.SNAPSHOT;
    }

    public String getArtifactId() {
        return "";
    }

    @Override
    public String getVersion() {
        return "";
    }

    @Override
    public Nature getNature() {
        return Nature.RELEASE_OR_SNAPSHOT;
    }

        return metadata.getArtifactId();
    }

    @Override
    public String getVersion() {
        return metadata.getVersion();
    }

    @Override
    public Nature getNature() {
        return Nature.SNAPSHOT;
    }

        int nature = getNature();
        if ((nature & RepositoryMetadata.RELEASE_OR_SNAPSHOT) == RepositoryMetadata.RELEASE_OR_SNAPSHOT) {
            ArtifactRepositoryPolicy policy = new ArtifactRepositoryPolicy(repository.getReleases());
            policy.merge(repository.getSnapshots());
            return policy;
        } else if ((nature & RepositoryMetadata.SNAPSHOT) != 0) {