class Cucumber::CucumberExpressions::Token

def self.symbol_of(token)
  case token
  when TokenType::BEGIN_OPTIONAL
    return BEGIN_OPTIONAL_CHARACTER
  when TokenType::END_OPTIONAL
    return END_OPTIONAL_CHARACTER
  when TokenType::BEGIN_PARAMETER
    return BEGIN_PARAMETER_CHARACTER
  when TokenType::END_PARAMETER
    return END_PARAMETER_CHARACTER
  when TokenType::ALTERNATION
    return ALTERNATION_CHARACTER
  else
    return ''
  end
end