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: base.rb
    path of file: ./repos/aasm/lib/aasm
    
    the code of the file until where you have to start completion: require 'logger'

module AASM
  class Base

    attr_reader :klass, :state_machine

    def initialize(klass, name, state_machine, options={}, &block)
      @klass = klass
      @name = name
      # @state_machine = klass.aasm(@name).state_machine
      @state_machine = state_machine
      @state_machine.config.column ||= (options[:column] || default_column).to_sym
      # @state_machine.config.column = options[:column].to_sym if options[:column] # master
      @options = options

      # let's cry if the transition is invalid
      configure :whiny_transitions, true

      # create named scopes for each state
      configure :create_scopes, true

      # don't store any new state if the model is invalid (in ActiveRecord)
      configure :skip_validation_on_save, false

      # raise if the model is invalid (in ActiveRecord)
      configure :whiny_persistence, false

      # Use transactions (in ActiveRecord)
      configure :use_transactions, true

      # use requires_new for nested transactions (in ActiveRecord)
      configure :requires_new_transaction, true

      # use pessimistic locking (in ActiveRecord)
      # true for FOR UPDATE lock
      # string for a specific lock type i.e. FOR UPDATE NOWAIT
      configure :requires_lock, false

      # automatically set `"#{state_name}_at" = ::Time.now` on state changes
      configure :timestamps, false

      # set to true to forbid direct assignment of aasm_state column (in ActiveRecord)
      configure :no_direct_assignment, false

      # allow a AASM::Base sub-class to be used for state machine
      configure :with_klass, AASM::Base

      configure :enum, nil

      # Set to true to namespace reader methods and constants
      configure :namespace, false

      # Configure a logger, with default being a Logger to STDERR
      configure :logger, Logger.new(STDERR)

      # setup timestamp-setting callback if enabled
      setup_timestamps(@name)

      # make sure to raise an error if no_direct_assignment is enabled
      # and attribute is directly assigned though
      setup_no_direct_assignment(@name)
    end

    # This method is both a getter and a setter
    def attribute_name(column_name=
    
    def initialize(klass, name, state_machine, options={}, &block)
      @klass = klass
      @name = name
      # @state_machine = klass.aasm(@name).state_machine
      @state_machine = state_machine
      @state_machine.config.column ||= (options[:column] || default_column).to_sym
      # @state_machine.config.column = options[:column].to_sym if options[:column] # master
      @options = options

      # let's cry if the transition is invalid
      configure :whiny_transitions, true

      # create named scopes for each state
      configure :create_scopes, true

      # don't store any new state if the model is invalid (in ActiveRecord)
      configure :skip_validation_on_save, false

      # raise if the model is invalid (in ActiveRecord)
      configure :whiny_persistence, false

      # Use transactions (in ActiveRecord)
      configure :use_transactions, true

      # use requires_new for nested transactions (in ActiveRecord)
      configure :requires_new_transaction, true

      # use pessimistic locking (in ActiveRecord)
      # true for FOR UPDATE lock
      # string for a specific lock type i.e. FOR UPDATE NOWAIT
      configure :requires_lock, false

      # automatically set `"#{state_name}_at" = ::Time.now` on state changes
      configure :timestamps, false

      # set to true to forbid direct assignment of aasm_state column (in ActiveRecord)
      configure :no_direct_assignment, false

      # allow a AASM::Base sub-class to be used for state machine
      configure :with_klass, AASM::Base

      configure :enum, nil

      # Set to true to namespace reader methods and constants
      configure :namespace, false

      # Configure a logger, with default being a Logger to STDERR
      configure :logger, Logger.new(STDERR)

      # setup timestamp-setting callback if enabled
      setup_timestamps(@name)

      # make sure to raise an error if no_direct_assignment is enabled
      # and attribute is directly assigned though
      setup_no_direct_assignment(@name)
    end

    # This method is both a getter and a setter
    def attribute_name(column_name=nil)
      if column_name
        @state_machine.config.column = column_name.to_sym
      else
        @state_machine.config.column ||= :aasm_state
      end
      @state_machine.config.column
    end