code: 	public String toString() {
  		final StringBuilder sb = new StringBuilder();
  		sb.append( "MetaConstraint" );
  		sb.append( "{constraintType=" ).append( constraintDescriptor.getAnnotation().annotationType().getName() );
  		sb.append( ", location=" ).append( location );
  		sb.append( "}" );
  		return sb.toString();
  	}
  