JON 2.4.1
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AS4 plugin code is showing 

        // Set the default value for the 'responseTimeLogFile' plugin config prop.
        // We do it here because the filename is derived from the context root.
        // first check if the context root is a multi level one and replace the / with an underscore
        String vHost = deploymentInformation.getVHost();
        setRtLogInPluginConfig(rtLogDir, pluginConfig, contextRoot, vHost);


Nothing for AS5