If I have something along the lines:
 
 {{constraintFactory.from(Entity.class)
.penalize("...",
BendableBigDecimalScore.ofSoft(2, 1, 0, BigDecimal.ONE),
entity -> // some integer);}}
I'm getting an error In the rule (...), the scoreHolder class (class org.optaplanner.core.impl.score.buildin.bendablebigdecimal.BendableBigDecimalScoreHolderImpl) does not support an int weightMultiplier (830)., but the weightMultiplier must be an integer IIUC (ToIntFunction<Entity>).