@Override
        public String toString() {
            return "VariableAmount.BaseAndAddition(base=" + this.base + ", addition=" + this.addition + ")";
        }
Represents a base amount with a random addition, the final amount will be
the base amount plus a random amount between zero (inclusive) and the
addition (exclusive).
helper/src/main/java/me/lucko/helper/random/VariableAmount.java