private void handleLeafValue(Inspector value) {
        NamedBuilder peek = stack.peek();
        String name = peek.nameStack().pop();
        ConfigBuilder builder = peek.builder();
        setValueForLeafNode(builder, name, value);
    }
A utility class that can be used to apply a payload to a config builder.

TODO: This can be refactored a lot, since many of the reflection methods are duplicated

@author Ulf Lilleengen
@author hmusum
@author Tony Vaagenes
config/src/main/java/com/yahoo/vespa/config/ConfigPayloadApplier.java