code: public java.util.List<SecurityGroupMembership> getSecurityGroups() {
          if (securityGroups == null) {
              securityGroups = new com.amazonaws.internal.SdkInternalList<SecurityGroupMembership>();
          }
          return securityGroups;
      }
docs: <p>
  A list of VPC Security Groups associated with the cluster.
  </p>
  
  @return A list of VPC Security Groups associated with the cluster.