Message in Chinese (Simplified) (中文(简体))
MC6016: 缺少 <var>X</var>:Class 属性。当已指定 <var>X</var>:Subclass 属性时该属性是必需的。
Unlocalized message
MC6016: <var>X</var>:Class attribute is missing. It is required when a <var>X</var>:Subclass attribute is specified.
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