public void setWeakandAdjustTarget(double target) {
        verifyThat(this.weakandAdjustTarget == null, "already has weakand adjust-target");
        verifyThat(target >= 0.0 && target <= 1.0, "weakand adjust-target must be in range [0, 1]");
        this.weakandAdjustTarget = target;
    }
This class holds the extracted information after parsing a
rank-profile block in a schema (.sd) file, using simple data
structures as far as possible.  Do not put advanced logic here!

@author arnej27959
config-model/src/main/java/com/yahoo/schema/parser/ParsedRankProfile.java