code: public void setReferenceDataSourceDescriptions(java.util.Collection<ReferenceDataSourceDescription> referenceDataSourceDescriptions) {
          if (referenceDataSourceDescriptions == null) {
              this.referenceDataSourceDescriptions = null;
              return;
          }
  
          this.referenceDataSourceDescriptions = new java.util.ArrayList<ReferenceDataSourceDescription>(referenceDataSourceDescriptions);
      }
docs: <p>
  Describes reference data sources configured for the application. For more information, see <a
  href="http://docs.aws.amazon.com/kinesisanalytics/latest/dev/how-it-works-input.html">Configuring Application
  Input</a>.
  </p>
  
  @param referenceDataSourceDescriptions
  Describes reference data sources configured for the application. For more information, see <a
  href="http://docs.aws.amazon.com/kinesisanalytics/latest/dev/how-it-works-input.html">Configuring
  Application Input</a>.