/**
     * Configures the job to block when upstream projects are building.
     *
     * @return
     */
    def blockOnUpstreamProjects() {
        execute {
            it / blockBuildWhenDownstreamBuilding(true)
        }
    }

    /**
     * Configures the job to block when downstream projects are building.
     * @return
     */
    def blockOnDownstreamProjects() {
        execute {
            it / blockBuildWhenUpstreamBuilding(true)
        }
    }