Demonstrate composition instead of inheritance

inheritance.pp

################### don't do this ###################
node default {
  include something
  include something else
}

node 'boo' inherits default {
  include a third thing
}


################ instead,  do this ###################
class base {
  include something
  include something else
}

node default {
  include base
}

node 'boo' {
  include base
  include a third thing
}