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() {
return '$runtimeType=($d1, $d2, $d3, $d4, $d5, $d6, $d7, $d8, $d9, $d10, $d11, $d12, $d13, $d14, $d15, $d16)';
}