# File lib/brakeman/checks/check_render.rb, line 85
  def safe_param? exp
    if params? exp and call? exp
      method_name = exp.method

      if method_name == :[]
        arg = exp.first_arg
        symbol? arg and [:controller, :action].include? arg.value
      else
        boolean_method? method_name
      end
    end
  end