Update map template variables specific to heatmap visual

def add_unique_template_variables(self, options):
        """Update map template variables specific to heatmap visual"""
        options.update(dict(
            colorStops=self.color_stops,
            radiusStops=self.radius_stops,
            weightProperty=self.weight_property,
            weightStops=self.weight_stops,
            intensityStops=self.intensity_stops,
        ))
        if self.vector_source:
            options.update(dict(
                vectorWeightStops=self.generate_vector_numeric_map('weight')))