toString method
A string representation of this object.
Some classes have a default textual representation,
often paired with a static parse function (like int.parse).
These classes will provide the textual representation as
their string representation.
Other classes have no meaningful textual representation
that a program will care about.
Such classes will typically override toString to provide
useful information when inspecting the object,
mainly for debugging or logging.
Implementation
@override
String toString({bool trail = true, bool lead = true, bool neg = false}) {
var val = "";
if (lead) val += rs;
val += neg ? _amount.format(-money / 1000) : _amount.format(money / 1000);
if (trail) val += "/-";
return val;
}