Request 1: .../api/ocurrence/type/This is / a single parameter

[HttpGet, Route("api/ocurrence/type/{*group}")]
public IEnumerable<string> Foo(string bar)
{
   // Do something
}

// Does not work
Request 2: .../api/ocurrence/type/This is + a single parameter
Request 3: .../api/ocurrence/type/This is º a single parameter