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