```ruby
# frozen_string_literal: true

module ActiveRecord
  module Postgres
    module Constraints
      module CommandRecorder
        def add_check_constraint(*args, &block)
          record(:add_check_constraint, args, &block)
        end

        def invert_add_check_constraint(args, &block)
          [:remove_check_constraint, args, block]
        end

        def remove_check_constraint(*args, &block)
          if args.length < 3
            raise ActiveRecord::IrreversibleMigration,
              'To make this migration reversible, pass the constraint to '\
              'remove_check_constraint, i.e. `remove_check_constraint, '\
              "#{args[0].inspect}, #{args[1].inspect}, 'price > 999'`"
          end
          record(:remove_check_constraint, args, &block)
        end

        def invert_remove_check_constraint(args, &block)
          [:add_check_constraint, args, block]
        end
      end
    end
  end
end
```

Define CommandRecorder methods dynamically in preparation for adding another type of constraint
user
```ruby
# frozen_string_literal: true

module ActiveRecord
  module Postgres
    module Constraints
      module CommandRecorder
        type = :check

        define_method("add_#{type}_constraint") do |*args, &block|
          record(:"add_#{type}_constraint", args, &block)
        end

        define_method("invert_add_#{type}_constraint") do |args, &block|
          [:"remove_#{type}_constraint", args, block]
        end

        define_method("remove_#{type}_constraint") do |*args, &block|
          if args.length < 3
            raise ActiveRecord::IrreversibleMigration,
              'To make this migration reversible, pass the constraint to '\
              "remove_#{type}_constraint, i.e. `remove_#{type}_constraint, "\
              "#{args[0].inspect}, #{args[1].inspect}, 'price > 999'`"
          end
          record(:"remove_#{type}_constraint", args, &block)
        end

        define_method("invert_remove_#{type}_constraint") do |args, &block|
          [:"add_#{type}_constraint", args, block]
        end
      end
    end
  end
end
```
assistant