$success
[1] 0

$message
$message$message
[1] "be"    "\"b\"" "is"    "\"B\""

$message$wrap
$message$wrap[[1]]
names(dimnames(NULL))[2]

$message$wrap[[2]]
$message$wrap[[2]][[1]]
NULL




$df
[1] 0

$lvl
[1] 0

$success
[1] 0

$message
$message$message
[1] "be"    "\"a\"" "is"    "\"A\""

$message$wrap
$message$wrap[[1]]
dimnames(NULL)[[1]][1]

$message$wrap[[2]]
$message$wrap[[2]][[1]]
NULL




$df
[1] 0

$lvl
[1] 0

$success
[1] 0

$message
$message$message
[1] "be" "1"  "is" "3" 

$message$wrap
$message$wrap[[1]]
length(dimnames(NULL)[[1]])

$message$wrap[[2]]
$message$wrap[[2]][[1]]
NULL




$df
[1] 0

$lvl
[1] 0

$success
[1] 0

$message
$message$message
[1] "be" "3"  "is" "1" 

$message$wrap
$message$wrap[[1]]
length(dimnames(NULL)[[1]])

$message$wrap[[2]]
$message$wrap[[2]][[1]]
NULL




$df
[1] 0

$lvl
[1] 0

$success
[1] 0

$message
$message$message
[1] "have"                "attribute \"names\"" ""                   
[4] ""                   

$message$wrap
$message$wrap[[1]]
dimnames(NULL)

$message$wrap[[2]]
$message$wrap[[2]][[1]]
NULL




$df
[1] 0

$lvl
[1] 0

$success
[1] 0

$message
$message$message
[1] "be"       "`NULL`"   "is"       "\"list\""

$message$wrap
$message$wrap[[1]]
dimnames(NULL)

$message$wrap[[2]]
$message$wrap[[2]][[1]]
NULL




$df
[1] 0

$lvl
[1] 0

$success
[1] 0

$message
$message$message
[1] "have"                     "a \"dimnames\" attribute"
[3] ""                         ""                        

$message$wrap
$message$wrap[[1]]
NULL

$message$wrap[[2]]
NULL



$df
[1] 0

$lvl
[1] 0

$success
[1] 0

$message
$message$message
[1] "be" "3"  "is" "0" 

$message$wrap
$message$wrap[[1]]
length(dimnames(NULL))

$message$wrap[[2]]
$message$wrap[[2]][[1]]
NULL




$df
[1] 0

$lvl
[1] 0

$success
[1] 0

$message
$message$message
[1] "be" "3"  "is" "4" 

$message$wrap
$message$wrap[[1]]
length(dimnames(NULL))

$message$wrap[[2]]
$message$wrap[[2]][[1]]
NULL




$df
[1] 0

$lvl
[1] 0

$success
[1] 0

$message
$message$message
[1] "be" "4"  "is" "3" 

$message$wrap
$message$wrap[[1]]
length(dimnames(NULL))

$message$wrap[[2]]
$message$wrap[[2]][[1]]
NULL




$df
[1] 0

$lvl
[1] 0