#### Goal
Use `MapChart ` API to duplicate certain map layer across all/any map viz in .dxp.
#### Issue
The [`MapChart` API](https://docs.tibco.com/pub/doc_remote/sfire_dev/area/doc/api/TIB_sfire-analyst_api/html/T_Spotfire_Dxp_Application_Visuals_MapChart.htm?_ga=2.25484413.155609001.1639415917-137239512.1626467940) seems to be missing this method.