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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 resolve_virtual_columns(self, *names):
 """ Assume that all ``names`` are legacy-style tuple declarations, and generate modern columns instances to match the behavior of the old syntax. """

        from .views.legacy import get_field_definition
        virtual_columns = {}
        for name in names:
            field = get_field_definition(name)
            column = TextColumn(sources=field.fields, label=field.pretty_name,
                                processor=field.callback)
            column.name = field.pretty_name if field.pretty_name else field.fields[0]
            virtual_columns[name] = column

        # Make sure it's in the same order as originally defined
        new_columns = OrderedDict()
        for name in self._meta.columns:  # Can't use self.config yet, hasn't been generated
            if self.columns.get(name):
                column = self.columns[name]
            else:
                column = virtual_columns[name]
            new_columns[column.name] = column
        self.columns = new_columns