src/vs/workbench/services/keybinding/common/macLinuxKeyboardMapper.ts/define
	function define(charCode: number, keyCode: KeyCode, shiftKey: boolean): void {
		for (let i = CHAR_CODE_TO_KEY_CODE.length; i < charCode; i++) {
			CHAR_CODE_TO_KEY_CODE[i] = null;
		}
		CHAR_CODE_TO_KEY_CODE[charCode] = { keyCode: keyCode, shiftKey: shiftKey };
	}