GD0109: The '[ExportToolButton]' attribute cannot be used with another '[Export]' attribute
===========================================================================================

====================================  ======================================
                                      Value
====================================  ======================================
**Rule ID**                           GD0109
**Category**                          Usage
**Fix is breaking or non-breaking**   Non-breaking
**Enabled by default**                Yes
====================================  ======================================

Cause
-----

A property is annotated with both the ``[ExportToolButton]`` and the ``[Export]``
attributes.

Rule description
----------------

The ``[ExportToolButton]`` attribute already implies exporting the member, so
the ``[Export]`` is unnecessary.

How to fix violations
---------------------

To fix a violation of this rule, remove the ``[Export]`` attribute.

When to suppress warnings
-------------------------

Do not suppress a warning from this rule. Multiple export attributes may lead
to duplicated members, resulting in unexpected runtime errors.