method DefaultCacheAdapter.prototype.sizeimport { DefaultCacheAdapter } from "https://deno.land/x/harmony@v2.9.1/src/cache/mod.ts"; size<T>(cacheName: string, filter?: (payload: T) => boolean): number | undefinedType ParametersTParameterscacheName: stringoptionalfilter: (payload: T) => booleanReturnsnumber | undefined