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() => _cache.entries
.map((MapEntry<K, CacheEntry<V>> value) => 'key: ${value.key}, value: ${value.value}')
.toList()
.join('\n');