If the list of items has only one entry, then the JSON produced will not have square brackets () and you must do some special handling.
如果条目列表中只有一项，那么生成的JSON将没有方括号()，而您必须对其做一些特殊处理。
If the list of items has only one entry, then the JSON produced will not have square brackets () and you must do some special handling.
如果条目列表中只有一项，那么生成的JSON将没有方括号()，而您必须对其做一些特殊处理。
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