code: public ModifyClusterRequest withClusterSecurityGroups(String... clusterSecurityGroups) {
          if (this.clusterSecurityGroups == null) {
              setClusterSecurityGroups(new com.amazonaws.internal.SdkInternalList<String>(clusterSecurityGroups.length));
          }
          for (String ele : clusterSecurityGroups) {
              this.clusterSecurityGroups.add(ele);
          }
          return this;
      }
docs: <p>
  A list of cluster security groups to be authorized on this cluster. This change is asynchronously applied as soon
  as possible.
  </p>
  <p>
  Security groups currently associated with the cluster, and not in the list of groups to apply, will be revoked
  from the cluster.
  </p>
  <p>
  Constraints:
  </p>
  <ul>
  <li>
  <p>
  Must be 1 to 255 alphanumeric characters or hyphens
  </p>
  </li>
  <li>
  <p>
  First character must be a letter
  </p>
  </li>
  <li>
  <p>
  Cannot end with a hyphen or contain two consecutive hyphens
  </p>
  </li>
  </ul>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setClusterSecurityGroups(java.util.Collection)} or
  {@link #withClusterSecurityGroups(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param clusterSecurityGroups
  A list of cluster security groups to be authorized on this cluster. This change is asynchronously applied
  as soon as possible.</p>
  <p>
  Security groups currently associated with the cluster, and not in the list of groups to apply, will be
  revoked from the cluster.
  </p>
  <p>
  Constraints:
  </p>
  <ul>
  <li>
  <p>
  Must be 1 to 255 alphanumeric characters or hyphens
  </p>
  </li>
  <li>
  <p>
  First character must be a letter
  </p>
  </li>
  <li>
  <p>
  Cannot end with a hyphen or contain two consecutive hyphens
  </p>
  </li>
  @return Returns a reference to this object so that method calls can be chained together.