@classmethod<EOL><INDENT>def create(klass, sequences):<DEDENT>
if isinstance(sequences, klass):<EOL><INDENT>return sequences<EOL><DEDENT>return klass(sequences)<EOL>
Factory that returns an EncodableSequences given a list of
strings. As a convenience, you can also pass it an EncodableSequences
instance, in which case the object is returned unchanged.