Exception used when the resource name cannot be parsed.

def bad_syntax(cls, syntax, resource_name, ex=None):
        """Exception used when the resource name cannot be parsed.
        """

        if ex:
            msg = "The syntax is '%s' (%s)." % (syntax, ex)
        else:
            msg = "The syntax is '%s'." % syntax

        msg = "Could not parse '%s'. %s" % (resource_name, msg)

        return cls(msg)