Compile error when using ilidoc for associations

[beistehen]

Problem

Given the following model snippet:

/** ilidoc Association
 */
ASSOCIATION Assoc1 =
    AssocA -- {0..*} ClassA;
    AssocB -<> {1} ClassB;
END Assoc1;

When using the new functionality Generate markdown documentation INTERLIS2 Language Server crashes and no output is generated. The following error is shown in the log:

[Error - 2:19:26 PM] Parser: Compile error at line 15:8 no viable alternative at input '/** ilidoc Association\r\n         */\r\n        ASSOCIATION'. - Antlr4.Runtime.NoViableAltException: Exception of type 'Antlr4.Runtime.NoViableAltException' was thrown.
   at Antlr4.Runtime.Atn.ParserATNSimulator.ExecATN(DFA dfa, DFAState s0, ITokenStream input, Int32 startIndex, ParserRuleContext outerContext)
   at Antlr4.Runtime.Atn.ParserATNSimulator.AdaptivePredict(ITokenStream input, Int32 decision, ParserRuleContext outerContext)
   at Geowerkstatt.Interlis.Tools.Interlis24Parser.topicContents() | Line='15' CharPosition='8' Message='no viable alternative at input '/** ilidoc Association\r\n         */\r\n        ASSOCIATION''
...

Expected behaviour

At the time of writing ilidoc is not supported when generating markdown documentation. So output should be generated ignoring ilidoc, as it is simply a block comment with an additional *.

Tests show that ilidoc blocks for other model elements are ignored correctly.

Version affected: 0.2.1

test-model and complete log