def lstrip(self, *args, **kwargs):
stripped = self.text.lstrip(*args, **kwargs)<EOL>offset = self.text.find(stripped)<EOL>return TokenWithPosition(stripped, self.position + offset)<EOL>
Strip leading whitespace for text.

        >>> t = TokenWithPosition('  asdf  ', 2)
        >>> t.lstrip()
        'asdf  '