For cases when player configuration map is setup via indexing operator, e.g. kalturaPlayerConfiguration_1_lre6rg3i_10[entry_id] = 1_lre6rg3i (see https://www.heise.de/video/artikel/odcast-c-t-uplink-20-1-Apple-CarPlay-vs-Android-Auto-Galileo-3D-Sound-erklaert-3919694.html)