The `isCanceled` method in the `qgis.core.QgsProcessingFeedback` module in Python checks whether a cancellation request has been made during the execution of a processing algorithm in QGIS. It allows the algorithm to periodically check if it should stop execution and return control to the user. If a cancellation request is detected, the method will return `True`, indicating that the algorithm should be canceled. Otherwise, it will return `False`, indicating that the algorithm can continue its execution.
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