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   3     It is possible to add more output methods for logical decoding.
   4     For details, see
   5     <code class="filename">src/backend/replication/logical/logicalfuncs.c</code>.
   6     Essentially, three functions need to be provided: one to read WAL, one to
   7     prepare writing output, and one to write the output
   8     (see <a class="xref" href="logicaldecoding-output-plugin.html#LOGICALDECODING-OUTPUT-PLUGIN-OUTPUT" title="47.6.5. Functions for Producing Output">Section 47.6.5</a>).
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