You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: harvest_data_setup.rb
    path of file: ./repos/harvesting/spec/harvesting
    
    the code of the file until where you have to start completion: require 'rspec/core'

module RSpec::Core::MemoizedHelpers::ClassMethods
  # Helper method to simplify defining let methods that are wrapped in a VCR
  # cassette. Calling this method is equivalent to calling:
  # ```
  # let!(variable_name) do
  #   VCR.use_casse
    
  def cassette_let!(name, &block)
    let!(name, &block)

    # partially duplicates the implementation found at:
    # https://github.com/rspec/rspec-core/blob/58f38210492cd369784d3fe1a849c0e81342a2f2/lib/rspec/core/memoized_helpers.rb
    define_method(name) {
      __memoized.fetch_or_store(name) {
        VCR.insert_cassette("harvest_data_setup/#{name}", :record => :once, :allow_playback_repeats => true)
        result = super(&nil)
        VCR.eject_cassette
        result
      }
    }
  end