pushBuilderSlice_(slice){this.builder_.push(slice);this.builder_=this.builder_.slice();}
static fromDict(dict){if(dict===undefined){return HistogramBinBoundaries.SINGULAR;}
const cacheKey=JSON.stringify(dict);if(HISTOGRAM_BIN_BOUNDARIES_CACHE.has(cacheKey)){return HISTOGRAM_BIN_BOUNDARIES_CACHE.get(cacheKey);}
const binBoundaries=new HistogramBinBoundaries(dict[0]);for(const slice of dict.slice(1)){if(!(slice instanceof Array)){binBoundaries.addBinBoundary(slice);continue;}