Alternation condition values can be stored as a list or as an identifier referring to an entry of the graphs appropriate container. However, the str method of AlternationNode handled this incorrectly. This is fixed now.
coverage: 88.252%. remained the same
when pulling 5de945330ba42465154c0aad21ce844e21cd2206 on print-fix
into b191d64f77dff3df9b74fd3dc9c3ebd065822eef on master.
Alternation condition values can be stored as a list or as an identifier referring to an entry of the graphs appropriate container. However, the str method of AlternationNode handled this incorrectly. This is fixed now.