code: @Deprecated
  	public void addInput(Operator<IN>... inputs) {
  		Preconditions.checkNotNull(inputs, "The input may not be null.");
  		this.input = Operator.createUnionCascade(this.input, inputs);
  	}
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.