# File actionpack/lib/action_controller/rack_lint_patch.rb, line 7
7:     def self.included(base)
8:       base.send :alias_method, :each, :each_with_hack
9:     end

    # File actionpack/lib/action_controller/rack_lint_patch.rb, line 11
11:     def each_with_hack
12:       @closed = false
13: 
14:       @body.each { |part|
15:         assert("Body yielded non-string value #{part.inspect}") {
16:           part.kind_of?(String)
17:         }
18:         yield part
19:       }
20: 
21:       if @body.respond_to?(:to_path)
22:         assert("The file identified by body.to_path does not exist") {
23:           ::File.exist? @body.to_path
24:         }
25:       end
26:     end