@param [Class] tag_class The tag class to search for @return [Tag] The first Tag that matches the given class
Tag this token with the specified tag
@param [Tag] new_tag An instance of {Tag} or one of its subclasses
@return [Boolean] true if this token has any tags
Print this Token in a pretty way
Remove all tags of the given class
@param [Class] The tag class to remove
[Validate]