How to use the medcat.utils.helpers.tkn_inds_from_doc function in medcat

cui:  Concept uniqe ID
        source_val:  Source value in the text
        text:  the text of a document where source_val was found
        """
        # First add the name, get bac all cuis that link to this name
        all_cuis = self._add_name(cui, source_val, is_pref_name, only_new=only_new, desc=desc, tui=tui)

        # Now add context if text is present
        if (text is not None and (source_val in text or text_inds)) or \
           (spacy_doc is not None and (text_inds or tkn_inds)):
            if spacy_doc is None:
                spacy_doc = self(text)

            if tkn_inds is None:
                tkn_inds = tkn_inds_from_doc(spacy_doc=spacy_doc, text_inds=text_inds,
                                             source_val=source_val)

            if tkn_inds is not None and len(tkn_inds) > 0:
                self.add_concept_cntx(cui, text, tkn_inds, spacy_doc=spacy_doc, lr=lr, anneal=anneal,
                        negative=negative)

                if manually_created:
                    all_cuis.remove(cui)
                    for _cui in all_cuis:
                        self.add_concept_cntx(_cui, text, tkn_inds, spacy_doc=spacy_doc, lr=lr, anneal=anneal,
                                negative=True)

in the current CDB.

        Examples:
            Do not use.
        '''
        # First add the name, get bac all cuis that link to this name
        all_cuis = self._add_name(cui, source_val, is_pref_name, only_new=only_new, desc=desc, tui=tui)

        # Now add context if text is present
        if (text is not None and (source_val in text or text_inds)) or \
           (spacy_doc is not None and (text_inds or tkn_inds)):
            if spacy_doc is None:
                spacy_doc = self(text)

            if tkn_inds is None:
                tkn_inds = tkn_inds_from_doc(spacy_doc=spacy_doc, text_inds=text_inds,
                                             source_val=source_val)

            if tkn_inds is not None and len(tkn_inds) > 0:
                self.add_concept_cntx(cui, text, tkn_inds, spacy_doc=spacy_doc, lr=lr, anneal=anneal,
                        negative=negative)

                if manually_created:
                    all_cuis.remove(cui)
                    for _cui in all_cuis:
                        self.add_concept_cntx(_cui, text, tkn_inds, spacy_doc=spacy_doc, lr=lr, anneal=anneal,
                                negative=True)