def find(self, kind):
        for parent, node in self.traverse():
            if isinstance(node, kind):
                return node
Returns a boolean of whether this field has a default value.
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/layout/dock_layout.py/LayoutNode.find--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/db/models/fields/__init__.py/Field.has_default