-    
-
-    /**
-     * Performs the next operation in the queue
-     */
-    private void nextOperation() {
-        
-        //Log_OC.wtf(TAG, "nextOperation init" );
-        
-        Pair<Target, RemoteOperation> next = null;
-        synchronized(mPendingOperations) {
-            next = mPendingOperations.peek();
-        }
-
-        if (next != null) {
-            
-            mCurrentOperation = next.second;
-            RemoteOperationResult result = null;
-            try {
-                /// prepare client object to send the request to the ownCloud server
-                if (mLastTarget == null || !mLastTarget.equals(next.first)) {
-                    mLastTarget = next.first;
-                    if (mLastTarget.mAccount != null) {
-                        OwnCloudAccount ocAccount = new OwnCloudAccount(mLastTarget.mAccount, this);
-                        mOwnCloudClient = OwnCloudClientManagerFactory.getDefaultSingleton().
-                                getClientFor(ocAccount, this);
-                        mStorageManager = 
-                                new FileDataStorageManager(
-                                        mLastTarget.mAccount, 
-                                        getContentResolver());
-                    } else {
-                        OwnCloudCredentials credentials = null;
-                        if (mLastTarget.mUsername != null && 
-                                mLastTarget.mUsername.length() > 0) {
-                            credentials = OwnCloudCredentialsFactory.newBasicCredentials(
-                                    mLastTarget.mUsername, 
-                                    mLastTarget.mPassword);  // basic
-                            
-                        } else if (mLastTarget.mAuthToken != null && 
-                                mLastTarget.mAuthToken.length() > 0) {
-                            credentials = OwnCloudCredentialsFactory.newBearerCredentials(
-                                    mLastTarget.mAuthToken);  // bearer token
-                            
-                        } else if (mLastTarget.mCookie != null &&
-                                mLastTarget.mCookie.length() > 0) {
-                            credentials = OwnCloudCredentialsFactory.newSamlSsoCredentials(
-                                    mLastTarget.mCookie); // SAML SSO
-                        }
-                        OwnCloudAccount ocAccount = new OwnCloudAccount(
-                                mLastTarget.mServerUrl, credentials);
-                        mOwnCloudClient = OwnCloudClientManagerFactory.getDefaultSingleton().
-                                getClientFor(ocAccount, this);
-                        mStorageManager = null;
-                    }
-                }
-
-                /// perform the operation
-                if (mCurrentOperation instanceof SyncOperation) {
-                    result = ((SyncOperation)mCurrentOperation).execute(mOwnCloudClient, mStorageManager);
-                } else {
-                    result = mCurrentOperation.execute(mOwnCloudClient);
-                }
-                
-            } catch (AccountsException e) {
-                if (mLastTarget.mAccount == null) {
-                    Log_OC.e(TAG, "Error while trying to get authorization for a NULL account", e);
-                } else {
-                    Log_OC.e(TAG, "Error while trying to get authorization for " + mLastTarget.mAccount.name, e);
-                }
-                result = new RemoteOperationResult(e);
-                
-            } catch (IOException e) {
-                if (mLastTarget.mAccount == null) {
-                    Log_OC.e(TAG, "Error while trying to get authorization for a NULL account", e);
-                } else {
-                    Log_OC.e(TAG, "Error while trying to get authorization for " + mLastTarget.mAccount.name, e);
-                }
-                result = new RemoteOperationResult(e);
-            } catch (Exception e) {
-                if (mLastTarget.mAccount == null) {
-                    Log_OC.e(TAG, "Unexpected error for a NULL account", e);
-                } else {
-                    Log_OC.e(TAG, "Unexpected error for " + mLastTarget.mAccount.name, e);
-                }
-                result = new RemoteOperationResult(e);
-            
-            } finally {
-                synchronized(mPendingOperations) {
-                    mPendingOperations.poll();
-                }
-            }
-            
-            //sendBroadcastOperationFinished(mLastTarget, mCurrentOperation, result);
-            dispatchResultToOperationListeners(mLastTarget, mCurrentOperation, result);
-        }
-    }