def insert_unique(self, table_name, data, unique_fields=None, *, raise_if_found=False):
return insert_unique(table=self.table(table_name),<EOL>data=_to_string(data),<EOL>unique_fields=unique_fields,<EOL>raise_if_found=raise_if_found)<EOL>
Insert `data` into `table` ensuring that data has unique values
        in `table` for the fields listed in `unique_fields`.

        If `raise_if_found` is True, will raise an NotUniqueItemError if
        another item with the same `unique_fields` values are found
        previously in `table`.
        If False, will return the `eid` from the item found.

        Parameters
        ----------
        table_name: str

        data: dict

        unique_fields: list of str
            Name of fields (keys) from `data` which are going to be used to build
            a sample to look for exactly the same values in the database.
            If None, will use every key in `data`.

        raise_if_found: bool

        Returns
        -------
        eid: int
            Id of the object inserted or the one found with same `unique_fields`.

        Raises
        ------
        MoreThanOneItemError
            Raise even with `raise_with_found` == False if it finds more than one item
            with the same values as the sample.

        NotUniqueItemError
            If `raise_if_found` is True and an item with the same `unique_fields`
            values from `data` is found in `table`.