https://monticore.github.io/monticore/monticore-grammar/javadoc/de/monticore/statements/mcassertstatements/_ast/ASTAssertStatement.html
ASTAssertStatement (monticore-grammar 7.9.0-SNAPSHOT API)
declaration: package: de.monticore.statements.mcassertstatements._ast, class: ASTAssertStatement
grammarsnapshotapi