.. package: qgis\.core Class: QgsOptionalQgsExpressionBase ............................................... .. py:module:: QgsOptionalQgsExpressionBase .. autoclass:: qgis.core.QgsOptionalQgsExpressionBase :special-members: __init__ :members: :undoc-members: .. autoautosummary:: qgis.core.QgsOptionalQgsExpressionBase :enums: :nosignatures: .. autoautosummary:: qgis.core.QgsOptionalQgsExpressionBase :methods: :nosignatures: .. autoautosummary:: qgis.core.QgsOptionalQgsExpressionBase :signals: :nosignatures: .. autoautosummary:: qgis.core.QgsOptionalQgsExpressionBase :attributes: