如何访问此数组数据(即 id、name 等):
stdClass Object
(
[_externalizedData] => Array
(
[0] => stdClass Object
(
[id] => 5
[tipo_usuario] => 0
[username] => maria@maria.com.br
[nome] => maria
)
)
[_explicitType] => flex.messaging.io.ArrayCollection
)