if (customIndexField.type === 'tag') {
          if ((customIndexField.options as CustomTagFieldOptions).separator !== undefined) optionsBody.separator = (customIndexField.options as CustomTagFieldOptions).separator;
        } else if (customIndexField.type === 'text') {
          if ((customIndexField.options as CustomTextFieldOptions).noStem !== undefined) optionsBody.no_stem = (customIndexField.options as CustomTextFieldOptions).noStem;
          if ((customIndexField.options as CustomTextFieldOptions).weight !== undefined) optionsBody.weight = (customIndexField.options as CustomTextFieldOptions).weight;