ESourceGroup @esourcegroup: the object which received the signal. @esourcegroup: the object which received the signal. @arg1: @esourcegroup: the object which received the signal. @arg1: @name: @base_uri: @Returns: @xml: @Returns: @doc: @Returns: @group: @xml: @changed_return: @Returns: @group: @doc: @changed_return: @Returns: @doc: @Returns: @group: @name: @group: @base_uri: @group: @readonly: @group: @Returns: @group: @Returns: @group: @Returns: @group: @Returns: @group: @Returns: @group: @source_uid: @Returns: @group: @source_name: @Returns: @group: @source: @position: @Returns: @group: @source: @Returns: @group: @uid: @Returns: @source: @property: @Returns: @source: @property: @value: @source: @func: @data: @group: @Returns: