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() => '${_Keys.price}: $price, '
'${_Keys.identifier}: $identifier, '
'${_Keys.subscriptionPeriod}: $subscriptionPeriod, '
'${_Keys.paymentMode}: $paymentMode, '
'${_Keys.localizedPrice}: $localizedPrice, '
'${_Keys.localizedSubscriptionPeriod}: $localizedSubscriptionPeriod, '
'${_Keys.localizedNumberOfPeriods}: $localizedNumberOfPeriods';