public final void clearAll(String name) {
        clearAll(new CompoundName(name), Map.of());
    }
Sets all properties having this name as a compound prefix to null.
I.e clearAll("a") will clear the value of "a" and "a.b" but not "ab".

@param name    the compound prefix of the properties to clear
@throws RuntimeException if no instance in the chain accepted this name-value pair
container-core/src/main/java/com/yahoo/processing/request/Properties.java