'Tell me how to create a token for use with imaginary token nodes.
For example, there is probably no input symbol associated with imaginary
token DECL, but you need to create it as a payload or whatever for
the DECL node as in ^(DECL type ID).
If you care what the token payload objects\' type is, you should
override this method and any other createToken variant.'

def createToken(self, fromToken=None, tokenType=None, text=None):

    raise NotImplementedError
