docs: public <K extends Comparable<K>> PartitionOperator<T> partitionByHash(KeySelector<T, K> keyExtractor) {
  		final TypeInformation<K> keyType = TypeExtractor.getKeySelectorTypes(keyExtractor, getType());
  		return new PartitionOperator<>(this, PartitionMethod.HASH, new Keys.SelectorFunctionKeys<>(clean(keyExtractor), this.getType(), keyType), Utils.getCallLocationName());
  	}