The method takes a string parameter, enclosed in quotes, and a code block.

该方法具有一个使用引号括起来的字符串参数和一个代码块。

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Static values don't have to be enclosed in quotes, but it is recommended for literal strings.

静态数值不需要加引号，但是字符串例外。

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Any leading or trailing Spaces around integer, Boolean, or enumerated values are ignored, even if enclosed in quotes.

即使将整数、布尔值或枚举值用引号括起来，其周围的任何前导或尾随空格也将被忽略。

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