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=head1 NAME
NetApp::Snapshot::Delta -- OO class which represents a single snapshot delta
=head1 SYNOPSIS
use NetApp::Filer;
use NetApp::Snapshot;
my $filer = NetApp::Filer->new({ .... });
my $volume = $filer->get_volume( $volname );
my @deltas = $volume->get_snapshot_deltas;
foreach my $snapshot ( $volume->get_snapshots ) {
my @deltas = $snapshot->get_snapshot_deltas;
}
=head1 DESCRIPTION
This class encapsulates a single snapshot delta.
=head1 INSTANCE METHODS
There are 5 key instance methods, each of this returns the data from
the column of the same name in the snap delta table.
=over
=item get_from
=item get_to
=item get_changed
=item get_time
=item get_rate
=back
=head2 is_summary
This method returns true of false, indicating that the delta was a
summary, as opposed to an individual delta.
=cut
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