@Override
	public Class<?>[] getSpecificTargetClasses() {
		return new Class<?>[] { Tuple.class };
	}
A {@link PropertyAccessor} implementation that enables reading of {@link Tuple} values using dot notation within SpEL
expressions. Writing is not supported since {@link Tuple}s are immutable.

@author Mark Fisher
spring-xd-tuple/src/main/java/org/springframework/xd/tuple/spel/TuplePropertyAccessor.java