I have to admit to, even in OO code, never using the OO interface to Data::Dumper - I use something along the lines of...

use Data::Dumper;
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print Dumper $some_ref; # Dump single structure
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# Dump multi structures - providing non-default names for each
print Data::Dumper->Dump [$ref1, $ref2],[qw/ref1 ref2/];
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