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 "\nuserData: $userData"
"\nsessionId: $sessionId"
"\nactivityType: $activityType"
"\nstartTime: $startTime"
"\nendTime: $endTime"
"\ntotalTime: $totalTime"
"\nexercises: $exercises";
}