'Initializes an empty AppEngineWebXml object.'

def __init__(self):

    self.app_id = None
    self.version_id = None
    self.source_language = None
    self.module = None
    self.service = None
    self.system_properties = {}
    self.beta_settings = {}
    self.vm_settings = {}
    self.health_check = None
    self.resources = None
    self.network = None
    self.env_variables = {}
    self.instance_class = None
    self.automatic_scaling = None
    self.manual_scaling = None
    self.basic_scaling = None
    self.ssl_enabled = True
    self.sessions_enabled = False
    self.async_session_persistence = False
    self.async_session_persistence_queue_name = None
    self.user_permissions = []
    self.public_root = ''
    self.static_include_pattern = None
    self.inbound_services = set([self.WARMUP_SERVICE])
    self.precompilation_enabled = True
    self.admin_console_pages = []
    self.static_error_handlers = []
    self.threadsafe = False
    self.threadsafe_value_provided = False
    self.codelock = None
    self.vm = False
    self.env = '1'
    self.api_config = None
    self.api_endpoint_ids = []
    self.pagespeed = None
    self.class_loader_config = []
    self.url_stream_handler_type = None
    self.use_google_connector_j = None
    self.static_file_includes = []
    self.static_file_excludes = ['WEB-INF/**', '**.jsp']
    self.resource_file_includes = []
    self.resource_file_excludes = []
    self.auto_id_policy = self.DEFAULT_POLICY
    self._app_root = ''
    self.static_include_pattern = None
    self.static_exclude_pattern = None
    self.resource_include_pattern = None
    self.resource_exclude_pattern = None
