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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def visit_field(self, _, children):
 """A simple field. Arguments --------- _ (node) : parsimonious.nodes.Node. children : list - 0: for ``FILTERS``: list of instances of ``.resources.Field``. Returns ------- .resources.Field An instance of ``.resources.Field`` with the correct name. Example ------- <Field[foo] /> <Field[foo] .foo(1) /> <Field[foo] .foo.bar() /> """


        filters = children[0]
        return self.Field(getattr(filters[0], 'name', None), filters=filters)