GstRegistry Abstract class for managing plugins. The registry holds the available plugins in the system. #GstPlugin, #GstPluginFeature @GST_REGISTRY_OK: @GST_REGISTRY_LOAD_ERROR: @GST_REGISTRY_SAVE_ERROR: @GST_REGISTRY_PLUGIN_LOAD_ERROR: @GST_REGISTRY_PLUGIN_SIGNATURE_ERROR: @GST_REGISTRY_READABLE: @GST_REGISTRY_WRITABLE: @GST_REGISTRY_REMOTE: @GST_REGISTRY_DELAYED_LOADING: @registry: @Returns: @registry: @Returns: @registry: @Returns: @registry: @Returns: @registry: @Returns: @registry: @path: @registry: @Returns: @registry: @registry: @plugin: @Returns: @registry: @plugin: @registry: @name: @Returns: @registry: @name: @type: @Returns: @registry: @plugin: @Returns: @registry: @plugin: @Returns: @registry: @plugin: @Returns: @Returns: @registry: @priority: @registry: @plugin: @Returns: @type: @Returns: @name: @Returns: @name: @type: @Returns: @flags: @Returns: