Annotation for the whitespace characters appear after this word. This can
be filled in by an invertible tokenizer so that the original text string can be
Note: When running a tokenizer token-by-token, in general this field will only
be filled in after the next token is read, so you need to be reading this field
one behind. Be careful about this.
Returns the type associated with this annotation. This method must
return the same class type as its value type parameter. It feels like
one should be able to get away without this method, but because Java
erases the generic type signature, that info disappears at runtime.