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this.counters[e]||0},Xn.prototype.putAttribute=function(e,t){var n,r,i=!(0===(n=e).length||40<n.length)&&(!_n.some(function(e){return n.startsWith(e)})&&!!n.match(wn)),o=0!==(r=t).length&&r.length<=100;if(i&&o)this.customAttributes[e]=t;else{if(!i)throw un.create("invalid attribute name",{attributeName:e});if(!o)throw un.create("invalid attribute value",{attributeValue:t})}},Xn.prototype.getAttribute=function(e){return this.customAttributes[e]},Xn.prototype.removeAttribute=function(e){void 0!==this.customAttributes[e]&&delete this.customAttributes[e]},Xn.prototype.getAttributes=function(){return p({},this.customAttributes)},Xn.prototype.setStartTime=function(e){this.startTimeUs=e},Xn.prototype.setDuration=function(e){this.durationUs=e},Xn.prototype.calculateTraceMetrics=function(){var 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