[rt-users] Code explanation

[mixo]

The  following  code is from  /lib/RT/Attachment .pm (line 190)
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
        my $id = $self->SUPER::Create(TransactionId =>
$args{'TransactionId'},
                                      ContentType  =>
$Attachment->mime_type,
                                      ContentEncoding =>
$ContentEncoding,
                                      Parent => $args{'Parent'},
                                      Content => $Body,
                                      Headers =>
$Attachment->head->as_string,
                                      Subject => $Subject,
                                      Filename => $Filename,
                                     );

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Could anyone explain to me what the code does?
(especially "SUPER" - what is being inherited and from where, why?)

Mixo