Method: Calculate segments for segmenting property bound to product (e.g. category, product_id, variation_id).

Method: Calculate segments for segmenting property bound to order (e.g. coupon or customer type).

Method: Assign segments to time intervals by updating original $intervals array.

Method: Returns an array of segments for totals part of REST response.

Method: Adds an array of segments to data->intervals object.

Method: Update row-level db result for segments in ‘intervals’ section to the format used for output.

Method: Fetches all segment ids from db and stores it for later use.

Method: Return all segment ids for given segmentby query parameter.

Method: Return all segment labels for given segmentby query parameter.

Method: Compares two report data objects by pre-defined object property and ASC/DESC ordering.