The response variable to look for can now also be chained.

When supplying the variable from the server response to use as the
seed, you can now supply chained objects using a dot. Example: instead
of supplying this setting:

"responseResultVarName": "result"

… you can supply:

"responseResultVarName": "data.result"

… which then looks for a "data" object and attempts to find "result" on
that object, which is then used as the seed for the attachList-method.