code: public DescribeCommunicationsResult withCommunications(Communication... communications) {
          if (this.communications == null) {
              setCommunications(new com.amazonaws.internal.SdkInternalList<Communication>(communications.length));
          }
          for (Communication ele : communications) {
              this.communications.add(ele);
          }
          return this;
      }
docs: <p>
  The communications for the case.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setCommunications(java.util.Collection)} or {@link #withCommunications(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param communications
  The communications for the case.
  @return Returns a reference to this object so that method calls can be chained together.