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.purchaseId}: $purchaseId, '
'${_Keys.vendorProductId}: $vendorProductId, '
'${_Keys.store}: $store, '
'${_Keys.purchasedAt}: $purchasedAt, '
'${_Keys.isOneTime}: $isOneTime, '
'${_Keys.isSandbox}: $isSandbox, '
'${_Keys.vendorTransactionId}: $vendorTransactionId, '
'${_Keys.vendorOriginalTransactionId}: $vendorOriginalTransactionId, '
'${_Keys.isRefund}: $isRefund';