# File lib/sinatra/base.rb, line 72
72:     def finish
73:       @body = block if block_given?
74:       if [204, 304].include?(status.to_i)
75:         header.delete "Content-Type"
76:         [status.to_i, header.to_hash, []]
77:       else
78:         body = @body || []
79:         body = [body] if body.respond_to? :to_str
80:         if body.respond_to?(:to_ary)
81:           header["Content-Length"] = body.to_ary.
82:             inject(0) { |len, part| len + Rack::Utils.bytesize(part) }.to_s
83:         end
84:         [status.to_i, header.to_hash, body]
85:       end
86:     end