method default.prototype.mergeKeyimport { default } from "https://deno.land/x/lume@v2.1.0/core/site.ts"; mergeKey(key: string,merge: MergeStrategy,scope?,): thisRegister a merging strategy for a data key Parameterskey: stringmerge: MergeStrategyoptionalscope = [UNSUPPORTED]Returnsthis