'column_map' => { #freeside => remote_db
'freeside_column' => 'remote_db_column',
'freeside_column' => sub { my $row = shift; $row->{remote_db_column}; },
},
'column_map' => { #freeside => remote_db
'freeside_column' => 'remote_db_column',
'freeside_column' => sub { my $row = shift; $row->{remote_db_column}; },
},