code: public java.util.List<String> getDeploymentGroups() {
          if (deploymentGroups == null) {
              deploymentGroups = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return deploymentGroups;
      }
docs: <p>
  The deployment groups for which this is the current target revision.
  </p>
  
  @return The deployment groups for which this is the current target revision.