RasterBrickTimeSeries in plotKML without starting GE

Hi,

I am using the function of the package plotKML to plot a RasterBrickTimeSeries in GoogleEarth. I have it working with the plotKML() function which also immediately opens GE. I am using the function in a model I am writing and therefor I just want it to write the kml without opening it. Is there such a function as well? Like the kml_layer.xxx() or kml() functions? It seems that it is missing for RasterBrickTimeSeries?

Kind regards,
Bouke Pieter Ottow