# Path: google/cloud/ndb/exceptions.py
# class Error(Exception):
# class ContextError(Error):
# class BadValueError(Error):
# class BadArgumentError(Error):
# class BadRequestError(Error):
# class Rollback(Error):
# class BadQueryError(Error):
# class BadFilterError(Error):
# class NoLongerImplementedError(NotImplementedError):
# class Cancelled(Error):
# class NestedRetryException(Error):
#     def __init__(self):
#     def __init__(self, filter):
#     def __init__(self):
# 
# Path: google/cloud/ndb/_options.py
# class Options(object):
# class ReadOptions(Options):
#     def options_or_model_properties(cls, wrapped):
#     def options(cls, wrapped, _disambiguate_from_model_properties=False):
#         def wrapper(*args, **kwargs):
#                 def get_arg(kwargs, name):
#     def slots(cls):
#     def __init__(self, config=None, **kwargs):
#     def __eq__(self, other):
#     def __ne__(self, other):
#     def __repr__(self):
#     def copy(self, **kwargs):
#     def items(self):
#     def __init__(self, config=None, **kwargs):
# 
# Path: google/cloud/ndb/tasklets.py
# class Future(object):
# class _TaskletFuture(Future):
# class _MultiFuture(Future):
# class Return(Exception):
# class QueueFuture(object):
# class ReducingFuture(object):
# class SerialQueueFuture(object):
#     def __init__(self, info="Unknown"):
#     def __repr__(self):
#     def done(self):
#     def running(self):
#     def wait(self):
#     def check_success(self):
#     def set_result(self, result):
#     def set_exception(self, exception):
#     def _finish(self):
#     def result(self):
#     def exception(self):
#     def get_traceback(self):
#     def add_done_callback(self, callback):
#     def cancel(self):
#     def cancelled(self):
#     def wait_any(futures):
#     def wait_all(futures):
#     def __init__(self, generator, context, info="Unknown"):
#     def _advance_tasklet(self, send_value=None, error=None):
#         def done_callback(yielded):
#     def cancel(self):
# def _get_return_value(stop):
#     def __init__(self, dependencies):
#     def __repr__(self):
#     def _dependency_done(self, dependency):
#     def cancel(self):
# def tasklet(wrapped):
#     def tasklet_wrapper(*args, **kwargs):
# def wait_any(futures):
# def wait_all(futures):
# def sleep(seconds):
# def add_flow_exception(*args, **kwargs):
# def make_context(*args, **kwargs):
# def make_default_context(*args, **kwargs):
#     def __init__(self, *args, **kwargs):
#     def __init__(self, *args, **kwargs):
#     def __init__(self, *args, **kwargs):
# def set_context(*args, **kwargs):
# def synctasklet(wrapped):
#     def synctasklet_wrapper(*args, **kwargs):
# def toplevel(wrapped):
#     def toplevel_wrapper(*args, **kwargs):
# 
# Path: google/cloud/ndb/utils.py
# TRUTHY_STRINGS = {"t", "true", "y", "yes", "on", "1"}
# DEBUG = asbool(os.environ.get("NDB_DEBUG", False))
# def asbool(value):
# def code_info(*args, **kwargs):
# def decorator(*args, **kwargs):
# def frame_info(*args, **kwargs):
# def func_info(*args, **kwargs):
# def gen_info(*args, **kwargs):
# def get_stack(*args, **kwargs):
# def logging_debug(log, message, *args, **kwargs):
#     def __init__(self, **kwargs):
#     def __call__(self, wrapped):
#         def wrapper(*args, **kwargs):
# def positional(max_pos_args):
#     def positional_decorator(wrapped):
#         def positional_wrapper(*args, **kwds):
# def tweak_logging(*args, **kwargs):
# def wrapping(*args, **kwargs):
# class keyword_only(object):


import base64
import functools
import six
import google.cloud.datastore
from google.cloud.datastore import _app_engine_key_pb2
from google.cloud.datastore import key as _key_module
from google.cloud.ndb import exceptions
from google.cloud.ndb import _options
from google.cloud.ndb import tasklets
from google.cloud.ndb import utils
        from google.cloud.ndb import model
        from google.cloud.ndb import context as context_module
        from google.cloud.ndb import _datastore_api
        from google.cloud.ndb import _transaction
        from google.cloud.ndb import model
        from google.cloud.ndb import context as context_module
        from google.cloud.ndb import _datastore_api
    from google.cloud.ndb import context as context_module
    from google.cloud.ndb import context as context_module
            b'agdleGFtcGxlcgsLEgRLaW5kGLkKDA'
        """
        raw_bytes = self.serialized()
        return base64.urlsafe_b64encode(raw_bytes).strip(b"=")

    def to_legacy_urlsafe(self, location_prefix):
        """
        A urlsafe serialized ``Reference`` protobuf with an App Engine prefix.

        This will produce a urlsafe string which includes an App Engine
        location prefix ("partition"), compatible with the Google Datastore
        admin console.

        Arguments:
            location_prefix (str): A location prefix ("partition") to be
                prepended to the key's `project` when serializing the key. A
                typical value is "s~", but "e~" or other partitions are
                possible depending on the project's region and other factors.

        .. doctest:: key-legacy-urlsafe

            >>> key = ndb.Key("Kind", 1337, project="example")
            >>> key.to_legacy_urlsafe("s~")
            b'aglzfmV4YW1wbGVyCwsSBEtpbmQYuQoM'
        """
        return google.cloud.datastore.Key(
            *self.flat(),
            **{"namespace": self._key.namespace, "project": self._key.project}
        ).to_legacy_urlsafe(location_prefix=location_prefix)


# Path: google/cloud/ndb/exceptions.py
# class Error(Exception):
# class ContextError(Error):
# class BadValueError(Error):
# class BadArgumentError(Error):
# class BadRequestError(Error):
# class Rollback(Error):
# class BadQueryError(Error):
# class BadFilterError(Error):
# class NoLongerImplementedError(NotImplementedError):
# class Cancelled(Error):
# class NestedRetryException(Error):
#     def __init__(self):
#     def __init__(self, filter):
#     def __init__(self):
# 
# Path: google/cloud/ndb/_options.py
# class Options(object):
# class ReadOptions(Options):
#     def options_or_model_properties(cls, wrapped):
#     def options(cls, wrapped, _disambiguate_from_model_properties=False):
#         def wrapper(*args, **kwargs):
#                 def get_arg(kwargs, name):
#     def slots(cls):
#     def __init__(self, config=None, **kwargs):
#     def __eq__(self, other):
#     def __ne__(self, other):
#     def __repr__(self):
#     def copy(self, **kwargs):
#     def items(self):
#     def __init__(self, config=None, **kwargs):
# 
# Path: google/cloud/ndb/tasklets.py
# class Future(object):
# class _TaskletFuture(Future):
# class _MultiFuture(Future):
# class Return(Exception):
# class QueueFuture(object):
# class ReducingFuture(object):
# class SerialQueueFuture(object):
#     def __init__(self, info="Unknown"):
#     def __repr__(self):
#     def done(self):
#     def running(self):
#     def wait(self):
#     def check_success(self):
#     def set_result(self, result):
#     def set_exception(self, exception):
#     def _finish(self):
#     def result(self):
#     def exception(self):
#     def get_traceback(self):
#     def add_done_callback(self, callback):
#     def cancel(self):
#     def cancelled(self):
#     def wait_any(futures):
#     def wait_all(futures):
#     def __init__(self, generator, context, info="Unknown"):
#     def _advance_tasklet(self, send_value=None, error=None):
#         def done_callback(yielded):
#     def cancel(self):
# def _get_return_value(stop):
#     def __init__(self, dependencies):
#     def __repr__(self):
#     def _dependency_done(self, dependency):
#     def cancel(self):
# def tasklet(wrapped):
#     def tasklet_wrapper(*args, **kwargs):
# def wait_any(futures):
# def wait_all(futures):
# def sleep(seconds):
# def add_flow_exception(*args, **kwargs):
# def make_context(*args, **kwargs):
# def make_default_context(*args, **kwargs):
#     def __init__(self, *args, **kwargs):
#     def __init__(self, *args, **kwargs):
#     def __init__(self, *args, **kwargs):
# def set_context(*args, **kwargs):
# def synctasklet(wrapped):
#     def synctasklet_wrapper(*args, **kwargs):
# def toplevel(wrapped):
#     def toplevel_wrapper(*args, **kwargs):
# 
# Path: google/cloud/ndb/utils.py
# TRUTHY_STRINGS = {"t", "true", "y", "yes", "on", "1"}
# DEBUG = asbool(os.environ.get("NDB_DEBUG", False))
# def asbool(value):
# def code_info(*args, **kwargs):
# def decorator(*args, **kwargs):
# def frame_info(*args, **kwargs):
# def func_info(*args, **kwargs):
# def gen_info(*args, **kwargs):
# def get_stack(*args, **kwargs):
# def logging_debug(log, message, *args, **kwargs):
#     def __init__(self, **kwargs):
#     def __call__(self, wrapped):
#         def wrapper(*args, **kwargs):
# def positional(max_pos_args):
#     def positional_decorator(wrapped):
#         def positional_wrapper(*args, **kwds):
# def tweak_logging(*args, **kwargs):
# def wrapping(*args, **kwargs):
# class keyword_only(object):


# Path: google/cloud/ndb/key.py
import base64
import functools
import six
import google.cloud.datastore
from google.cloud.datastore import _app_engine_key_pb2
from google.cloud.datastore import key as _key_module
from google.cloud.ndb import exceptions
from google.cloud.ndb import _options
from google.cloud.ndb import tasklets
from google.cloud.ndb import utils
        from google.cloud.ndb import model
        from google.cloud.ndb import context as context_module
        from google.cloud.ndb import _datastore_api
        from google.cloud.ndb import _transaction
        from google.cloud.ndb import model
        from google.cloud.ndb import context as context_module
        from google.cloud.ndb import _datastore_api
    from google.cloud.ndb import context as context_module
    from google.cloud.ndb import context as context_module

            b'agdleGFtcGxlcgsLEgRLaW5kGLkKDA'
        """
        raw_bytes = self.serialized()
        return base64.urlsafe_b64encode(raw_bytes).strip(b"=")

    def to_legacy_urlsafe(self, location_prefix):
        """
        A urlsafe serialized ``Reference`` protobuf with an App Engine prefix.

        This will produce a urlsafe string which includes an App Engine
        location prefix ("partition"), compatible with the Google Datastore
        admin console.

        Arguments:
            location_prefix (str): A location prefix ("partition") to be
                prepended to the key's `project` when serializing the key. A
                typical value is "s~", but "e~" or other partitions are
                possible depending on the project's region and other factors.

        .. doctest:: key-legacy-urlsafe

            >>> key = ndb.Key("Kind", 1337, project="example")
            >>> key.to_legacy_urlsafe("s~")
            b'aglzfmV4YW1wbGVyCwsSBEtpbmQYuQoM'
        """
        return google.cloud.datastore.Key(
            *self.flat(),
            **{"namespace": self._key.namespace, "project": self._key.project}
        ).to_legacy_urlsafe(location_prefix=location_prefix)


    @_options.ReadOptions.options