code: public void setParameterGroups(java.util.Collection<ClusterParameterGroup> parameterGroups) {
          if (parameterGroups == null) {
              this.parameterGroups = null;
              return;
          }
  
          this.parameterGroups = new com.amazonaws.internal.SdkInternalList<ClusterParameterGroup>(parameterGroups);
      }
docs: <p>
  A list of <a>ClusterParameterGroup</a> instances. Each instance describes one cluster parameter group.
  </p>
  
  @param parameterGroups
  A list of <a>ClusterParameterGroup</a> instances. Each instance describes one cluster parameter group.