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: sqlite3_adapter.rb
    path of file: ./repos/stackneveroverflow/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.3/lib/active_record/connection_adapters
    
    the code of the file until where you have to start completion: require 'active_record/connection_adapters/abstract_adapter'
require 'active_record/connection_adapters/statement_pool'
require 'active_record/connect
    
      def change_column_default(table_name, column_name, default_or_changes) #:nodoc:
        default = extract_new_default_value(default_or_changes)

        alter_table(table_name) do |definition|
          definition[column_name].default = default
        end
      end