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this.Ll?this.Ll:this.ampdoc.isSingleDoc()&&Tr(this.ampdoc.getRootNode())?(this.Ll=[""],this.Ll):void 0}}{constructor(t){super(t),this.Ul=null}$l(t,i,s){return this.setBoth(t,(()=>co(this.ampdoc.win,i,s)),(()=>lo(this.ampdoc.win,i,s)))}initialize(){const{win:t}=this.ampdoc,i=this.ampdoc.getHeadNode(),s=_s(this.ampdoc);ds(this.ampdoc).then((t=>{this.Ul=t})),this.set("RANDOM",(()=>Math.random()));const e=Object.create(null);this.set("COUNTER",(t=>e[t]=1+(0|e[t]))),this.set("CANONICAL_URL",(()=>this.Fl().canonicalUrl)),this.set("CANONICAL_HOST",(()=>sn(this.Fl().canonicalUrl).host)),this.set("CANONICAL_HOSTNAME",(()=>sn(this.Fl().canonicalUrl).hostname)),this.set("CANONICAL_PATH",(()=>sn(this.Fl().canonicalUrl).pathname)),this.setAsync("DOCUMENT_REFERRER",(()=>ps(this.ampdoc).getReferrerUrl())),this.setAsync("EXTERNAL_REFERRER",(()=>ps(this.ampdoc).getReferrerUrl().then((i=>i?sn(mn(i)).hostname===Ns.getHostname(t)?null:i:null)))),this.set("TITLE",(()=>{const i=t.document;return i.originalTitle||i.title})),this.set("AMPDOC_URL",(()=>cn(this.Bl(t.location.href)))),this.set("AMPDOC_HOST",(()=>{const i=sn(t.location.href);return i&&i.host})),this.set("AMPDOC_HOSTNAME",(()=>{const i=sn(t.location.href);return i&&i.hostname}));const n=()=>{const t=this.Fl();return cn(this.Bl(t.sourceUrl))};this.setBoth("SOURCE_URL",(()=>n()),(()=>Lh().then((()=>n())))),this.set("SOURCE_HOST",(()=>sn(this.Fl().sourceUrl).host)),this.set("SOURCE_HOSTNAME",(()=>sn(this.Fl().sourceUrl).hostname)),this.set("SOURCE_PATH",(()=>sn(this.Fl().sourceUrl).pathname)),this.set("PAGE_VIEW_ID",(()=>this.Fl().pageViewId)),this.setAsync("PAGE_VIEW_ID_64",(()=>this.Fl().pageViewId64)),this.setBoth("QUERY_PARAM",((t,i="")=>this.Hl(t,i)),((t,i="")=>Lh().then((()=>this.Hl(t,i))))),this.set("FRAGMENT_PARAM",((t,i="")=>this.jl(t,i)));let h=null;this.setBoth("CLIENT_ID",(t=>h?h[t]:null),((t,s,e,n)=>{Tt(t,"The first argument to CLIENT_ID, the fallback Cookie name, is required");let o=r();return 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