@Deprecated
    private String[] toStringArray(List<String> list) {
        if (list == null) {
            return null;
        }

        return list.toArray(new String[0]);
    }
Instantiates a new Cxf plugin config.
<p>
profiler.cxf.client and profiler.cxf.client.hiddenParams is deprecated.

@param src the src
agent-module/plugins/cxf/src/main/java/com/navercorp/pinpoint/plugin/cxf/CxfPluginConfig.java