[antlr-interest] howto write stringtemplate for optional rule?

[Oliver Kowalke]

Hello,
how can I express in the stringtemplate that DEILMETER is optional?

rule_x
	:
	rule_y( DELIMETER )?
	-> template(y={$rule_y.text},delim={$DELIMETER.text}) "<y><delim>"
	;

rule_y : /* ... some EBNF ... */ ;

best regards,
Oliver

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