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ExplosionRemoveNearbyWaterloggedBlocks entity property, which allows to remove nearby waterlogged blocks (until now, only removing waterlogged state was possible using ExplosionRemoveWaterloggedStateFromNearbyBlocks.ExplosionRemoveWaterloggedStateFromNearbyBlocks, ExplosionRemoveNearbyWaterloggedBlocks and ExplosionRemoveNearbyLiquids:
exampleConfig.yml file for more details on this.