in reply to Invoking a string reference to a anonymous subroutine

You can do:Update: Ooops, no, you can't do this in your example since your subroutine does not have a name...
$self->$handler(@arguments);
Or use the code ref directly (saves a method lookup) (update: and you can do this):
$self->$_parse_element_configuration(@arguments);

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Re^2: Invoking a string reference to a anonymous subroutine
by AnomalousMonk (Archbishop) on Jan 14, 2014 at 21:58 UTC
    You can do:

    $self->$handler(@arguments);

    This will only work if the anonymous subroutine reference is assigned to  $handle and not the name of the lexical as in the OP.