private init make(n_id : nullable TId , n_expr : nullable AExpr , n_else : nullable AExpr)
	do
		n_kwassert = new TKwassert
		n_kwelse = null
		if n_else != null then n_kwelse = new TKwelse
		self.init_aassertexpr(n_kwassert, n_id , n_expr , n_kwelse , n_else)
	end