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: evaluator_rspec_helper.rb
    path of file: ./repos/puppet/spec/unit/pops/evaluator
    
    the code of the file until where you have to start completion: require 'puppet/pops'
require 'puppet/pops/evaluator/evaluator_impl'

require File.join(File.dirname(__FILE__), '/../factory_rs
    
  def evaluate_l in_top_scope, in_local_scope = nil, in_top_scope_again = nil, &block
    node = Puppet::Node.new('localhost')
    compiler = Puppet::Parser::Compiler.new(node)

    # compiler creates the top scope if one is not present
    top_scope = compiler.topscope()

    evaluator = Puppet::Pops::Evaluator::EvaluatorImpl.new
    Puppet.override(:loaders => compiler.loaders) do
      result = evaluator.evaluate(in_top_scope.model, top_scope)
      if in_local_scope
        # This is really bad in 3.x scope
        top_scope.with_guarded_scope do
          top_scope.new_ephemeral(true)
          result = evaluator.evaluate(in_local_scope.model, top_scope)
        end
      end
      if in_top_scope_again
        result = evaluator.evaluate(in_top_scope_again.model, top_scope)
      end