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