code: public ListUserPoolClientsResult withUserPoolClients(UserPoolClientDescription... userPoolClients) {
          if (this.userPoolClients == null) {
              setUserPoolClients(new java.util.ArrayList<UserPoolClientDescription>(userPoolClients.length));
          }
          for (UserPoolClientDescription ele : userPoolClients) {
              this.userPoolClients.add(ele);
          }
          return this;
      }
docs: <p>
  The user pool clients in the response that lists user pool clients.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setUserPoolClients(java.util.Collection)} or {@link #withUserPoolClients(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param userPoolClients
  The user pool clients in the response that lists user pool clients.
  @return Returns a reference to this object so that method calls can be chained together.