code: public ListChannelsResult withChannelSummaries(ChannelSummary... channelSummaries) {
          if (this.channelSummaries == null) {
              setChannelSummaries(new java.util.ArrayList<ChannelSummary>(channelSummaries.length));
          }
          for (ChannelSummary ele : channelSummaries) {
              this.channelSummaries.add(ele);
          }
          return this;
      }
docs: <p>
  A list of "ChannelSummary" objects.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setChannelSummaries(java.util.Collection)} or {@link #withChannelSummaries(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param channelSummaries
  A list of "ChannelSummary" objects.
  @return Returns a reference to this object so that method calls can be chained together.