Lists.parseListCreationInfo throws JSONException if unmatched identifiers are not strings

[jtnystrom]

Hi everyone, thanks for your work on Intermine. I found what I think is a bug in the Java client library and thought I would try to contribute a fix.

During list creation, if some unmatched identifiers are integers, which can happen if a list is specified using Entrez gene IDs, then we can have

"unmatchedIdentifiers":[
100909873,
100125377,
100910861, ...

which causes ServiceException at:

org.intermine.client.lists.Lists.parseListCreationInfo(Lists.java:103)
at org.intermine.client.services.ListService.processListCreationRequest(ListService.java:661)
at org.intermine.client.services.ListService.createList(ListService.java:236)

caused by

Caused by: org.json.JSONException: JSONArray[0] not a string.
at org.json.JSONArray.getString(JSONArray.java:333)
at org.intermine.client.lists.Lists.parseListCreationInfo(Lists.java:98)

The attached change to Lists here (optString(0) instead of getString(0)) fixes this and should not affect the case where the item is a String.

I have tested this with my application and confirmed that it works, but unfortunately I wasn't able to run the intermine-ws-java test suite.