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: 20200517190138_rename_crop_fields.rb
    path of file: ./repos/retrospring/db/migrate
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

class RenameCropFields < ActiveRecord::Migration[5.2]
  def change
    rename_column :users, :crop_h, :profile_picture_h
    rename_column :users, :crop_w, :profile_picture_w
    rename_column :user
    
  def change
    rename_column :users, :crop_h, :profile_picture_h
    rename_column :users, :crop_w, :profile_picture_w
    rename_column :users, :crop_x, :profile_picture_x
    rename_column :users, :crop_y, :profile_picture_y
    rename_column :users, :crop_h_h, :profile_header_h
    rename_column :users, :crop_h_w, :profile_header_w
    rename_column :users, :crop_h_x, :profile_header_x
    rename_column :users, :crop_h_y, :profile_header_y
  end