# File lib/heckle.rb, line 300
  def mutate_asgn(node)
    type = node.shift
    var = node.shift
    if node.empty? then
      s(type, :_heckle_dummy)
    else
      if node.last.first == :nil then
        s(type, var, s(:lit, 42))
      else
        s(type, var, s(:nil))
      end
    end
  end