Set the color ramp of the raster converter instance

def setColorRamp(self, colorRamp=None):
        """
        Set the color ramp of the raster converter instance
        """
        if not colorRamp:
            self._colorRamp = RasterConverter.setDefaultColorRamp(ColorRampEnum.COLOR_RAMP_HUE)
        else:
            self._colorRamp = colorRamp