class Jets::Cfn::Builders::SharedBuilder

def compose 

def compose
  stack = @app_class.new # @app_class is subclass. IE: Alarm < Jets::Stack
  builder = Jets::Stack::Builder.new(stack)
  @template = builder.template # overwrite entire @template
end

def template_path

template_path is an interface method for Interface module 
def template_path
  Jets::Naming.shared_template_path(@app_class)
end