Sink Removal
ta_preprocessor
QgsProcessingParameterRasterLayer|DEM|DEM|None|False
QgsProcessingParameterRasterLayer|SINKROUTE|Sink Route|None|True
QgsProcessingParameterEnum|METHOD|Method|[0] Deepen Drainage Routes;[1] Fill Sinks
QgsProcessingParameterBoolean|THRESHOLD        |Threshold|True
QgsProcessingParameterNumber|THRSHEIGHT|Threshold Height|QgsProcessingParameterNumber.Double|100.0|False|None|None
QgsProcessingParameterRasterDestination|DEM_PREPROC|Preprocessed DEM