private static JuniperrcConfig.Override.Builder createOverride(String name) {
        return new JuniperrcConfig.Override.Builder()
                .fieldname(name)
                .length(64*Mb)
                .max_matches(1)
                .min_length(8192)
                .surround_max(64*Mb);
    }
Constructs a new juniper rc instance for a given search object.
This will derive the configuration automatically,
so there is no need to call {@link #derive(Schema)}.

@param schema the search model to use for deriving
config-model/src/main/java/com/yahoo/schema/derived/Juniperrc.java