.. py:function:: create_flatten(type_, arg, modifiers = None)

   
   Return the expression tree for flattening a structured value.


   :Parameters:

       **type\_** : :obj:`suite.NamedType`
           Type to instantiate.

       **arg** : :obj:`EX`
           Value to flatten.

       **modifiers** : :obj:`Union`\[:obj:`ET`, :obj:`List`\[:obj:`ET`]], default: :data:`python:None`
           List of higher-order constructs.

   :Returns:

       :obj:`ET`
           ..













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