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: access_operator.rb
    path of file: ./repos/puppet/lib/puppet/pops/evaluator
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Puppet::Pops
module Evaluator
# AccessOperator handles operator []
# This operator is part of 
    
  def access_PClassType(o, scope, keys)
    blamed = keys.size == 0 ? @semantic : @semantic.keys[0]
    keys_orig_size = keys.size

    if keys_orig_size == 0
      fail(Issues::BAD_TYPE_SLICE_ARITY, blamed,
           :base_type => o.to_s, :min => 1, :max => -1, :actual => 0)
    end