sub get_hostitemnumbers_of {
my ($biblionumber) = @_;
my $marcrecord = C4::Biblio::GetMarcBiblio({ biblionumber => $biblionumber });
if( !C4::Context->preference('EasyAnalyticalRecords') ) {
return ();
}
return unless $marcrecord;
my ( @returnhostitemnumbers, $tag, $biblio_s, $item_s );
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