Output the given ‘tree` of nodes at the specified `indent` level.
def output_template_nodes( tree, indent=0 )
indenttxt = ' ' * indent
tree.each do |node|
self.prompt.say( indenttxt + node.as_comment_body )
self.output_template_nodes( node.subnodes, indent+4 ) if node.is_container?
end
end