open fun sizeToNativeAsync(scale: String, value: Double, gender: String, options: Map<String, Any> = HashMap()): Deferred<Map<String, Any>?>
Converts a size value from the native scale to the corresponding value in the specified scale. The available scales, genders and sizes can be obtained with the method getSizesAsync.
scale - The scale which one wants to convert to.
value - The value which one wants to convert.
gender - The gender of the scale and value to be converted.
Return
A Deferred that will be completed with the converted value.