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() {
final contents = [
if (name != null) 'name=$name',
if (displayName != null) 'displayName=$displayName',
if (model != null) 'model=$model',
].join(',');
return 'CachedContent($contents)';
}