Source
A reference to a box entry, i.e., a data source. When merging data, the corresponding sources are removed after the merged data has been saved.
Instance creation
Source source = new Source(accountWithKey, boxLabel, hash);
var source = new cds.Source(accountWithKey, boxLabel, hash);
my $source = CDS::Source->new($accountWithKey, $boxLabel, $hash);
Creates an instance.