Rather than counting clips, this function counts the number of qualifiers in a row, with a specific category and name.
Basic format: ["count_qualifiers", "row_name", [search_criteria] , "start_time", "end_time" ]
In the following example, we want to know how many passes we had during our possession and we might have multiple 'Pass' qualifiers in a single clip. The count_qualifiers function works by calculating how many qualifiers in the timeline exist in the "Possession" row's clips which include a qualifier with the qualifier name, "Pass", and qualifier category "Action".
e.g: ["count_qualifiers", "Possession", [{"Action": "Pass"}]
You can also define a start and end time which is also useful with the min_time_start and max_time_end functions - ensure you define the timing variables before you use them in this function.