Type parameters differ from properties in that they don't directly relate to actual discoverable and updatable resources on the underlying system. Rather, they do one of the two following things:

• Allow you to specify additional informational context for interacting with properties and resources on the underlying system
• Provide a layer of abstraction allowing you to override the expected behavior on the underlying system

Let's add a source parameter to our new type using the newparam method:

Puppet::Type.newtype(:mynewtype) do
   ...
   newparam(:source) do
   end
   ...
 end