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() => 'IntrospectionResponse[active=$active, aud=$aud, clientId=$clientId, exp=$exp, ext=$ext, iat=$iat, iss=$iss, nbf=$nbf, tokenType=$tokenType, username=$username, sub=$sub, jti=$jti]';