question: public static ConstraintsParameters loadPolicyData ( InputStream policyDataStream ) { if ( policyDataStream != null ) { return load ( policyDataStream ) ; } if ( ( defaultPolicyConstraintsLocation != null ) && ! defaultPolicyConstraintsLocation . isEmpty ( ) ) { return load ( defaultPolicyConstraintsLocation ) ; } return null ; }
target:  This method loads the policy constraint file. If the validationPolicy is not specified then the default policy file is loaded.