def _prereqs_fulfilled?(p)
      ret = true
      p.prereqs.each do |req|
        a = @prompts.find do |answer|
          answer.config_key == req[:config_key] &&
          answer.answer == req[:config_value]
        end
        ret = false if a.nil?
      end
      ret
    end
def _prereqs_fulfilled?(p)
      ret = true
      p.prereqs.each do |req|
        a = @prompts.find do |answer|
          answer.config_key == req[:config_key] &&
          answer.answer == req[:config_value]
        end
        ret = false if a.nil?
      end
      ret
    end
Utility method for determining whether a prompt's
 prerequisites have already been fulfilled.
 @param [Hash] p The prompt
 @return [void]