public boolean isExecuted()
    {
        return executed;
    }
Returns true if at least one attempt to load plugins has been done. A true value does not mean
that available plugins have been loaded nor that plugins to be added in the future are already
loaded. :)<p>

@return true if at least one attempt to load plugins has been done.
xmppserver/src/main/java/org/jivesoftware/openfire/container/PluginManager.java