stHeader extends Polymer.Element {
            static get is() {
                return 'merge-request-header';
            }
            static get properties() {
                return {
                    issue: {
                        type: String,
                    },
                    record: {
                        type: String,
                    },
                    script: {
                        type: String,
                        computed: 'computeScript(issue, record)'
         