Wrapper: Multiple execution is broken

[druckdev]

The wrappers seem to create new parentheses for the search groups (as in buildGroup()) in every new call to the API

[druckdev]

This seems to be fixed.
Sadly I cannot recreate the issue with any of the last commits. I do not know which commit solved this.

[druckdev]

This is not fixed. I get the same problem with following query:

{
    "search_groups":
        [
            {
                "search_terms": ["machine learning"],
                "match": "AND"
            }
        ],
    "match": "AND"
}