class Cucumber::CucumberExpressions::ParameterIsNotAllowedInOptional

def initialize(node, expression)
  super(build_message(
            node.start,
            expression,
            point_at_located(node),
            'An optional may not contain a parameter type',
            "If you did not mean to use an parameter type you can use '\\{' to escape the the '{'"
        ))
end