# Functions
调用次方法 必须加上 defer 关键字！.
调用次方法 必须加上 defer 关键字！.
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补丁：临时解决test表达式，包含<符号时etree 无法解析的问题.
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首字母转小写.
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首字母转大写.
# Constants
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# Variables
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