.. py:function:: create_if(condition, then, else_)

   
   Return the expression tree for the if-then-else operator.


   :Parameters:

       **condition** : :obj:`EX`
           Expression tree corresponding to the condition of the selector.

       **then** : :obj:`Union`\[:obj:`EX`, :obj:`List`\[:obj:`EX`]]
           List of expressions trees when the condition is ``True``.

       **else\_** : :obj:`Union`\[:obj:`EX`, :obj:`List`\[:obj:`EX`]]
           List of expressions trees when the condition is ``False``.

   :Returns:

       :obj:`ET`
           ..








   .. rubric:: Notes

   This is an interface change with respect to the *SCADE Creation Library*.
   The ``then`` flows and ``else`` flows are now specified in two separate lists.





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