fillAsync
open fun fillAsync(count: Long, ioPriority: Int, cancellable: Cancellable? = null, callback: AsyncReadyCallback)
Reads data into @stream's buffer asynchronously, up to @count size.
Parameters
count
the number of bytes that will be read from the stream
ioPriority
the io-priority of the request
cancellable
optional #GCancellable object
callback
a #GAsyncReadyCallback