function wrapCallback() {
				var oFocusedElement = document.activeElement,
					oSpan = document.createElement("span"),
					oStaticAreaDomRef = StaticArea.getDomRef(),
					args = arguments;

				oSpan.setAttribute("tabindex", 0);
				oSpan.setAttribute("id", "sap-ui-shortcut-focus");
				oSpan.style.position = "absolute";
				oSpan.style.top = "50%";
				oSpan.style.bottom = "50%";
				oSpan.style.left = "50%";
				oSpan.style.right = "50%";

				// add span to static-ui-area
				oStaticAreaDomRef.appendChild(oSpan);

				// switch the focus after the current call stack because some input device (e.g. Barcode scanner) fires
				// the "keyup" event in a 0 timeout after the 'keydown' event. We need to make sure that the element can
				// receive both of the events before we switch the focus to the "span"
				setTimeout(function() {
					// set focus on span to enforce blur - e.g. data of input field needs to get persisted
					oSpan.focus();

					// setting back the focus async ensures that also a fieldGroupChange happens
					setTimeout(function() {
						// restore old focus
						oFocusedElement.focus();

						// cleanup DOM
						oStaticAreaDomRef.removeChild(oSpan);

						// trigger callback
						fnCallback.apply(null, args);
					});
				});

			}
Registers a shortcut key combination at the region defined by the given control.

IMPORTANT:
- THIS API DOES NOT GUARANTEE THAT A REGISTERED SHORTCUT WILL WORK IN ALL BROWSER/OPERATING
  SYSTEM/KEYBOARD/LOCALE COMBINATIONS. IT ALSO DOES NOT GUARANTEE THAT A SHORTCUT, WHICH WORKED
  INITIALLY, WILL REMAIN WORKING IN THE FUTURE. BUG REPORTS RELATED TO SPECIFIC KEY COMBINATIONS
  WILL NOT BE HANDLED. BY USING THIS API, YOU AGREE TO THESE TERMS.

Reason for this strict rule is that some key combinations are simply not available in certain
browsers or browser-OS combinations and that browsers can at any time define new built-in shortcuts
which break this API, without a chance for a workaround.

Note:
- When a shortcut involving the "Ctrl" key is registered, the shortcut will instead use the "Cmd" key
  on Macs. Example: when "Ctrl+I" is registered, the key combination to press on Macs is "Cmd+I",
  while it is "Ctrl+I" on Windows, Linux and everywhere else.
- When the scope/region control is cloned, the clones will also have the same shortcut registered.
- Shortcut handlers will only be triggered when the keydown event has not already been handled by a child control.
- When the AltGr key is involved, no shortcut handler will be triggered.
- Shortcuts ate not active when the scope/region control is busy or blocked.
- Even though some shortcut key combinations known to be used by browsers are actively blocked, there
  is -as stated above - no guarantee that a successfully registered shortcut will work in all browsers
  and on all platforms and combined with all types of keyboards or will remain working.

https://www.w3.org/TR/uievents-key/#named-key-attribute-value

@param {sap.ui.core.Control} oScopeControl the control within which the shortcut key combination should
trigger the callback

@param {string|object} vShortcut the shortcut key combination, either as human-readable string like
"Ctrl+Alt+Shift+T" ("+"-separated list of optional modifiers, followed by the actual key to press)
or as object with the string "key" and the boolean flags "ctrl", "alt" and "shift".
The string is case-insensitive and the "key" can in both variants be any string matching the following expression:

/^([a-z0-9\.,\-\*\/=]|Plus|Tab|Space|Enter|Backspace|Home|Delete|End|Pageup|Pagedown|ArrowUp|ArrowDown|ArrowLeft|ArrowRight|Escape|F[1-9]|F1[0-2])$/i

These key names comply with the specification at https://www.w3.org/TR/uievents-key/#named-key-attribute-value

@param {function} fnCallback the function to be called when the shortcut is pressed by the user.
This callback receives one argument with the following properties:
- registeredShortcut: the vShortcut object or string as given when the shortcut was registered
- originalBrowserEvent: the original keyboard event from the browser. Be careful when using this,
as all browser and platform differences are exposed!

@throws an exception when the same shortcut is already registered or when a shortcut is attempted to be
registered which is disallowed from being used (because it is known to be already used by browser/OS and
hence in some cases even impossible to register).

@private