* @return ValidationContext
*/
private ValidationContext getValidationContext(){
ValidationState validationState = null;
// create an instance of 'ValidationState' providing the information required for the
// validation of datatypes id, idref, entity, notation, qname.
// application can also provide its own implementation of ValidationContext if required,
// an implementation of 'ValidationContext' is in 'org.apache.xerces.impl.validation' package.
validationState = new ValidationState();
// application need to pass validation context while validating string, object or creating simple type (applyFacets)
// derived by restriction, should set the following information accordingly
//application should provide the namespace support by calling