Plugin to control and modifying the process of importing a scene. This plugin type exists to modify the process of importing scenes, allowing to change the content as well as add importer options at every stage of the process. Override to add general import options. These will appear in the main import dock on the editor. Add options via [method add_import_option] and [method add_import_option_advanced]. Override to add internal import options. These will appear in the 3D scene import dialog. Add options via [method add_import_option] and [method add_import_option_advanced]. Return true whether updating the 3D view of the import dialog needs to be updated if an option has changed. Return true or false whether a given option should be visible. Return null to ignore. Return true or false whether a given option should be visible. Return null to ignore. Process a specific node or resource for a given category. Post process the scene. This function is called after the final scene has been configured. Pre Process the scene. This function is called right after the scene format loader loaded the scene and no changes have been made. Add a specific import option (name and default value only). This function can only be called from [method _get_import_options] and [method _get_internal_import_options]. Add a specific import option. This function can only be called from [method _get_import_options] and [method _get_internal_import_options]. Query the value of an option. This function can only be called from those querying visibility, or processing.