getDefault method Null safety
Implementation
@$core.pragma('dart2js:noInline')
static KeyValuePair getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<KeyValuePair>(create);
@$core.pragma('dart2js:noInline')
static KeyValuePair getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<KeyValuePair>(create);