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Utilities
=========
.. warning::
The components in this module are *not* intended for outside use, but are
internal to the Globus SDK.
They may change in backwards-incompatible ways in minor or patch releases
of the SDK.
This documentation is included here for completeness.
PayloadWrapper
--------------
The ``PayloadWrapper`` class is used as a base class for all Globus SDK
payload datatypes to provide nicer interfaces for payload construction.
The objects are a type of ``UserDict`` with no special methods.
.. autoclass:: globus_sdk.utils.PayloadWrapper
MissingType and MISSING
-----------------------
The ``MISSING`` sentinel value is used as an alternative to ``None`` in APIs
which accept ``null`` as a valid value. Whenever ``MISSING`` is included in a
request, it will be removed before the request is sent to the service.
As a result, where ``MISSING`` is used as the default for a value, ``None`` can
be used to explicitly pass the value ``null``.
.. class:: globus_sdk.MissingType
:canonical: globus_sdk.utils.MissingType
This is the type of ``MISSING``.
.. py:data:: globus_sdk.MISSING
The ``MISSING`` sentinel value. It is a singleton.
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