code: public void setValidationData(java.util.Collection<AttributeType> validationData) {
          if (validationData == null) {
              this.validationData = null;
              return;
          }
  
          this.validationData = new java.util.ArrayList<AttributeType>(validationData);
      }
docs: <p>
  The validation data in the request to register a user.
  </p>
  
  @param validationData
  The validation data in the request to register a user.