# WriteStreamCallbackArgs
Argument passed to the callback when an asynchronous writeStream operation finishes.
NOTE
This is an abstract type. Any object of this structure can be used where this type is used.
# Properties
# bytesProcessed
bytesProcessed :Number
Number of bytes processed, or -1 in the event of an error or end of stream.
# errorDescription DEPRECATED
errorDescription :String
DEPRECATED SINCE 3.1.0
Use error property to determine error message
Text description of the error.
# errorState DEPRECATED
errorState :Number
DEPRECATED SINCE 3.1.0
Use success or code values to determine error conditions
Whether an error was encountered. Set to 1 in the case of an error, 0 otherwise.