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L<makamaka/JSON-PP#49|https://github.com/makamaka/JSON-PP/issues/49>.)

Optionally, your implementation may offer users a way
to choose the boolean values. This document makes no
recommendation as to the interface for such a setting.

=for comment Some of the Perl JSON modules are currently (2023) in the
process of adding support for core booleans. It may be
useful to wait until those implementations are completed
and then follow whichever approach they chose. See also:
L<JSON::PP/"boolean_values">,
L<rurban/Cpanel-JSON-XS#214|https://github.com/rurban/Cpanel-JSON-XS/issues/214>

=head2 Null

The Cypher C<null> value can be neatly implemented as Perl C<undef>.

=head2 Bytes

Byte arrays are not first-class Cypher values, but still have
some limited support as pass-through values in Neo4j.