function load failed in mysql mode

[foxluqi]

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h2 will add unix_timestamp in mysql mode.

And this will lead below action failed with function exist exception. H2FunctionsLoader.loadMysqlFunctions(dataSource); H2 version is 1.4.200

pom file

<dependency>
    <groupId>org.mvnsearch</groupId>
    <artifactId>h2-functions-4-mysql</artifactId>
    <version>1.0.0</version>
</dependency>