Sets the list of loaded plugins for engine. When this function is called,
the peas.Engine will load all the plugins whose names are in plugin_names,
and ensures all other active plugins are unloaded.
If plugin_names is NULL, all plugins will be unloaded.
Sets the list of loaded plugins for engine. When this function is called, the peas.Engine will load all the plugins whose names are in plugin_names, and ensures all other active plugins are unloaded.
If plugin_names is NULL, all plugins will be unloaded.