hostname                    localhost
pid                         12345
req%id                      6789
req%method                  GET
req%path                    api/check
req%host                    foo.bar
req%headers%host            bar.baz
req%headers%user-agent      browser
res%status_code             200
res%header%content-type     text
res%header%content-encoding plain
empty1                      {}
empty2                      []
wrapper%empty3              {}
wrapper%emtpy4              []
