public FixedQuery rankingSoftTimeout(boolean enable, double factor) {
        this.param("ranking.softtimeout.enable", enable);
        this.param("ranking.softtimeout.factor", factor);
        return this;
    }
FixedQuery contains a 'Query'.
This object holds vespa or user defined parameters
https://docs.vespa.ai/en/reference/query-api-reference.html
client/src/main/java/ai/vespa/client/dsl/FixedQuery.java