method LRU.prototype.hasimport { LRU } from "https://dotland.deno.dev/x/ultra@v1.0.1/src/deps.ts"; has(key: string): booleanReturns a boolean indicating whether an element with the specified key exists or not Parameterskey: stringThe key of the element to test for presence in the cache Returnsbooleantrue if an element with the specified key exists in the cache otherwise false