code: public void setDirectoryDescriptions(java.util.Collection<DirectoryDescription> directoryDescriptions) {
          if (directoryDescriptions == null) {
              this.directoryDescriptions = null;
              return;
          }
  
          this.directoryDescriptions = new com.amazonaws.internal.SdkInternalList<DirectoryDescription>(directoryDescriptions);
      }
docs: <p>
  The list of <a>DirectoryDescription</a> objects that were retrieved.
  </p>
  <p>
  It is possible that this list contains less than the number of items specified in the <code>Limit</code> member
  of the request. This occurs if there are less than the requested number of items left to retrieve, or if the
  limitations of the operation have been exceeded.
  </p>
  
  @param directoryDescriptions
  The list of <a>DirectoryDescription</a> objects that were retrieved.</p>
  <p>
  It is possible that this list contains less than the number of items specified in the <code>Limit</code>
  member of the request. This occurs if there are less than the requested number of items left to retrieve,
  or if the limitations of the operation have been exceeded.