getTransferStatus  
  @GET(value = "/{productType}/{apiVersion}/transfer/{referenceId}") 
Makes a request to get the transfer status.
Return
A ResponseBody containing the transfer status.
Parameters
productType 
The API Products (MomoConstants.ProductTypes).
apiVersion 
The app Version (e.g., v1_0 or v2_0).
referenceId 
The transfer reference ID (UUID V4).
productSubscriptionKey  
The Product subscription Key (Ocp-Apim-Subscription-Key).
environment
The API environment (X-Target-Environment).