microsoft-azure-storage/src/com/microsoft/azure/storage/file/FileOutputStream.java
@Override
    @DoesServiceRequest
    public synchronized void flush() throws IOException {
        this.checkStreamState();
        
        // Dispatch a write for the current bytes in the buffer
        this.dispatchWrite(this.currentBufferedBytes);
        
        // Waits for all submitted tasks to complete
        while (this.outstandingRequests > 0) {
            // Wait for a task to complete
            this.waitForTaskToComplete();
            
            // If that task threw an error, fail fast
            this.checkStreamState();
        }
    }
@Override
    @DoesServiceRequest
    public synchronized void flush() throws IOException {
        this.checkStreamState();
        
        // Dispatch a write for the current bytes in the buffer
        this.dispatchWrite(this.currentBufferedBytes);
        
        // Waits for all submitted tasks to complete
        while (this.outstandingRequests > 0) {
            // Wait for a task to complete
            this.waitForTaskToComplete();
            
            // If that task threw an error, fail fast
            this.checkStreamState();
        }
    }
Flushes this output stream and forces any buffered output bytes to be written out. If any data remains in the
buffer it is committed to the service.

@throws IOException
If an I/O error occurs.