public Boolean isOverridable(String fieldName, DimensionValues dimensionValues) {
        QueryProfileVariant variant = getVariant(dimensionValues, false);
        if (variant == null) return null;
        return variant.isOverridable(fieldName);
    }
Makes a value unoverridable in a given context.
container-search/src/main/java/com/yahoo/search/query/profile/QueryProfileVariants.java