Registers a new shared object.

        :param name: Unique name for shared object
        :type name: str
        :param description: Description of shared object
        :type description: str
        :param obj: The object, which shall be shared
        :type obj: any type
        :param plugin: Plugin, which registers the new shared object

def register(self, name, description, obj, plugin):
        """
        Registers a new shared object.

        :param name: Unique name for shared object
        :type name: str
        :param description: Description of shared object
        :type description: str
        :param obj: The object, which shall be shared
        :type obj: any type
        :param plugin: Plugin, which registers the new shared object
        """
        if name in self._shared_objects.keys():
            raise SharedObjectExistException("Shared Object %s already registered by %s"
                                             % (name, self._shared_objects[name].plugin.name))

        new_shared_object = SharedObject(name, description, obj, plugin)
        self._shared_objects[name] = new_shared_object
        self.log.debug("Shared object registered: %s" % name)
        return new_shared_object