def setAttr(self, nodes, name, value):
raise NotImplementedError<EOL>
Set attribute of UI element.

Args:
    nodes: UI element or list of UI elements, if there is a list of UI elements provided, then only the \
    first UI element will be used
    name (:obj:`str`): attribute name
    value: new value to be set.

Raises:
    UnableToSetAttributeException: raised when：

        * fails to set attributes on given UI element
        * the  engine does not support mutating attributes
        * developer does not allow to change the attribute value by implementation