function lensPropimport { lensProp } from "https://dotland.deno.dev/x/rambda@v9.2.0/mod.ts"; lensProp<S, K extends keyof S = keyof S>(prop: K): Lens<S, S[K]>It returns a lens that focuses on specified property prop. It returns a lens that focuses on specified property prop. Type ParametersSoptionalK extends keyof S = keyof SParametersprop: KReturnsLens<S, S[K]>