get(opts) {
    const key = LMRCache.#keyFor(opts)
    return this.#cache.get(key)
  }
Gets or creates a new {@link LavamoatModuleRecord} for the given
`LavamoatModuleRecord` or options.

@param {SimpleLavamoatModuleRecordOptions | LavamoatModuleRecord} opts
@returns {LavamoatModuleRecord | undefined}