ta4j/src/main/java/eu/verdelhan/ta4j/Decimal.java
public Decimal multipliedBy(Decimal multiplicand) {
        if ((this == NaN) || (multiplicand == NaN)) {
            return NaN;
        }
        return new Decimal(delegate.multiply(multiplicand.delegate, MATH_CONTEXT));
    }
public Decimal multipliedBy(Decimal multiplicand) {
        if ((this == NaN) || (multiplicand == NaN)) {
            return NaN;
        }
        return new Decimal(delegate.multiply(multiplicand.delegate, MATH_CONTEXT));
    }
Returns a {@code Decimal} whose value is {@code this * multiplicand},
with rounding according to the context settings.
@param multiplicand value to be multiplied by this {@code Decimal}.
@return {@code this * multiplicand}, rounded as necessary
@see BigDecimal#multiply(java.math.BigDecimal, java.math.MathContext)