GDNativeExtensionClassCreationInfo.is_abstract

• class_userdata
• create_instance_func
• free_instance_func
• free_property_list_func
• get_func
• get_property_list_func
• get_rid_func
• get_virtual_func
• is_abstract
• is_virtual
• notification_func
• property_can_revert_func
• property_get_revert_func
• reference_func
• set_func
• to_string_func
• unreference_func