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: 20160210083955_force_default_value_in_intervention_durations.rb
    path of file: ./repos/ekylibre/db/migrate
    
    the code of the file until where you have to start completion: class ForceDefaultValueInInterventionDurations < ActiveRecord::Migration[4.2]
  def change
    change_column_default :interventions, :working_duration, 0
    change_column_default :interventions, :whole_duration, 0
    reversible do |d|
      d.up do
        execute 'UPDATE interventions SET working_duration = 0 WHERE working_duration IS NULL'
        execute 'UPDATE
    
  def change
    change_column_default :interventions, :working_duration, 0
    change_column_default :interventions, :whole_duration, 0
    reversible do |d|
      d.up do
        execute 'UPDATE interventions SET working_duration = 0 WHERE working_duration IS NULL'
        execute 'UPDATE interventions SET whole_duration = 0 WHERE whole_duration IS NULL'
      end
    end
    change_column_null :interventions, :working_duration, false
    change_column_null :interventions, :whole_duration, false
  end