migrate

# File activerecord/lib/active_record/migration/compatibility.rb, line 115
        def migrate(*)
          ActiveSupport::Deprecation.warn              "Directly inheriting from ActiveRecord::Migration is deprecated. "              "Please specify the Rails release the migration was written for:\n"              "\n"              "  class #{self.class.name} < ActiveRecord::Migration[4.2]"
          super
        end