```ruby
module DataMapper::Salesforce
  module Property
  end
end

require 'dm-salesforce/property/serial'
require 'dm-salesforce/property/boolean'
require 'dm-salesforce/property/integer'
require 'dm-salesforce/property/float'
```

Remove references to unecessary Integer and Float (in the DM1 case).
user
```ruby
module DataMapper::Salesforce
  module Property
  end
end

require 'dm-salesforce/property/serial'
require 'dm-salesforce/property/boolean'
```
assistant