def to_field(self):
        """Creates the :class:`fiftyone.core.fields.Field` specified by this
        document.

        Returns:
            a :class:`fiftyone.core.fields.Field`
        """
        ftype = etau.get_class(self.ftype)

        embedded_doc_type = self.embedded_doc_type
        if embedded_doc_type is not None:
            embedded_doc_type = etau.get_class(embedded_doc_type)

        subfield = self.subfield
        if subfield is not None:
            subfield = etau.get_class(subfield)

        fields = None
        if self.fields is not None:
            fields = [field_doc.to_field() for field_doc in list(self.fields)]

        return create_field(
            self.name,
            ftype,
            embedded_doc_type=embedded_doc_type,
            subfield=subfield,
            fields=fields,
            db_field=self.db_field,
            description=self.description,
            info=self.info,
            read_only=self.read_only,
            created_at=self.created_at,
        )
Creates the :class:`fiftyone.core.fields.Field` specified by this
        document.

        Returns:
            a :class:`fiftyone.core.fields.Field`
        
fiftyone/core/odm/dataset.py