beginMap
Begin a map (i.e. in JSON this would be a '{') and return a MapSerializer that can be used to serialize the map's entries.
Parameters
descriptor
SdkFieldDescriptor of container for formats that require them.
Begin a map (i.e. in JSON this would be a '{') and return a MapSerializer that can be used to serialize the map's entries.
SdkFieldDescriptor of container for formats that require them.