code: @SuppressWarnings("unchecked")
  	@Deprecated
  	public void addInputs(List<? extends Operator<IN>> inputs) {
  		Preconditions.checkNotNull(inputs, "The inputs may not be null.");
  		this.input = createUnionCascade(this.input, (Operator<IN>[]) inputs.toArray(new Operator[inputs.size()]));
  	}
docs: Adds to the input the union of the given operators.
  
  @param inputs The operator(s) to be unioned with the input.
  @deprecated This method will be removed in future versions. Use the {@link eu.stratosphere.api.common.operators.Union} operator instead.