/a><emu-mods><emu-params>[?Yield, ?Await]</emu-params></emu-mods></emu-nt><emu-nt params="?Yield, ?Await" id="_ref_35"><a href="#prod-OptionalChain">OptionalChain</a><emu-mods><emu-params>[?Yield, ?Await]</emu-params></emu-mods></emu-nt></emu-rhs>
</emu-production>
<emu-production name="OptionalChain" params="Yield, Await" id="prod-OptionalChain">
    <emu-nt params="Yield, Await"><a href="#prod-OptionalChain">OptionalChain</a><emu-mods><emu-params>[Yield, Await]</emu-params></emu-mods></emu-nt><emu-geq>:</