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# ->setPlugins() ->disablePlugins() ->enablePlugins() ->enableAllPluginsExcept()
 -  throws an exception if called too late
 -  throws an exception if called too late
 -  throws an exception if called too late
 -  throws an exception if called too late
 -  can enable plugins passed as arguments instead of array
# ->__construct()
 -  throws an exception if a non-existant plugin is enabled
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