The `do` keyword

Property definitions

	# The `do` keyword
	var n_kwdo: nullable TKwdo = null is writable

src/parser/parser_nodes.nit:1389,2--1390,46

	redef fun n_kwdo=(node)
	do
		_n_kwdo = node
		if node != null then node.parent = self
	end

src/parser/parser_prod.nit:958,2--962,4