With the "bundle" model and a slight modification, that last loop becomes:

foreach my $data ($fp->bundle_parseable_files->all->get_data) {
  # do something with each $data
}
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The AUTOLOAD in File::Collector::Iterator::All is slightly different:

  sub AUTOLOAD {
    our $AUTOLOAD;
    my $self = shift;
    my @result = ();
    if (defined wantarray)
      { push @result, $$self->$AUTOLOAD(@_) while ($$self->next_file) 
+}
    else
      { $$self->$AUTOLOAD(@_) while ($$self->next_file) }
    return wantarray ? @result : \@result;
  }
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