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It is possible to add more output methods for logical decoding.
For details, see
<code class="filename">src/backend/replication/logical/logicalfuncs.c</code>.
Essentially, three functions need to be provided: one to read WAL, one to
prepare writing output, and one to write the output
(see <a class="xref" href="logicaldecoding-output-plugin.html#LOGICALDECODING-OUTPUT-PLUGIN-OUTPUT" title="49.6.5. Functions for Producing Output">Section 49.6.5</a>).
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