public Decimal plus(Decimal augend) {
        if ((this == NaN) || (augend == NaN)) {
            return NaN;
        }
        return new Decimal(delegate.add(augend.delegate, MATH_CONTEXT));
    }
public Decimal plus(Decimal augend) {
        if ((this == NaN) || (augend == NaN)) {
            return NaN;
        }
        return new Decimal(delegate.add(augend.delegate, MATH_CONTEXT));
    }
public Decimal plus ( Decimal augend ) { if ( ( this == NaN ) || ( augend == NaN ) ) { return NaN ; } return new Decimal ( delegate . add ( augend . delegate , MATH_CONTEXT ) ) ; }
Returns a {@code Decimal} whose value is {@code (this + augend)},
with rounding according to the context settings.
@param augend value to be added to this {@code Decimal}.
@return {@code this + augend}, rounded as necessary
@see BigDecimal#add(java.math.BigDecimal, java.math.MathContext)
Returns a {