IOExtension# class IOExtension(*args, **kwargs)# IOExtension is an opaque data structure and can only be accessed using the following functions. Methods# class IOExtension get_name() → str# Gets the name under which extension was registered. Note that the same type may be registered as extension for multiple extension points, under different names. get_priority() → int# Gets the priority with which extension was registered. get_type() → type# Gets the type associated with extension.