file: Optional field. If given, it specifies the external file for binary map data. If it specifies an already
existing file, then that file will be loaded. If null, then the map data will be embedded as a BASE64 chunk.
tmplt: Optional field. Specifies the initial tile source data from a map file alongside with the name of the layer
Creates a new tile layer with the given data.
file: Optional field. If given, it specifies the external file for binary map data. If it specifies an already existing file, then that file will be loaded. If null, then the map data will be embedded as a BASE64 chunk. tmplt: Optional field. Specifies the initial tile source data from a map file alongside with the name of the layer