code: @Override
      public Money multiply(double multiplicand) {
      	NumberVerifier.checkNoInfinityOrNaN(multiplicand);
          if (multiplicand == 1.0d) {
              return this;
          }
          return multiply(new BigDecimal(String.valueOf(multiplicand)));
      }
docs: /*
  (non-Javadoc)
  
  @see javax.money.MonetaryAmount#multiply(Number)