src/main/java/com/itfsw/mybatis/generator/plugins/utils/XmlElementGeneratorTools.java
public static XmlElement generateKeysSelective(List<IntrospectedColumn> columns, String prefix) {
        return generateKeysSelective(columns, prefix, true);
    }
public static XmlElement generateKeysSelective(List<IntrospectedColumn> columns, String prefix) {
        return generateKeysSelective(columns, prefix, true);
    }
生成keys Selective Ele
@param columns
@param prefix
@return