How to use the @cumulus/cmrjs.getFullMetadata function in @cumulus/cmrjs

timeToArchive: get(payload, 'meta.post_to_cmr_duration', 0) / 1000,
          processingStartDateTime: extractDate(payload, 'meta.sync_granule_end_time'),
          processingEndDateTime: extractDate(payload, 'meta.post_to_cmr_start_time')
        };

        doc.published = get(g, 'published', false);
        // Duration is also used as timeToXfer for the EMS report
        doc.duration = (doc.timestamp - doc.createdAt) / 1000;

        if (g.cmrLink) {
          const metadata = await cmrjs.getMetadata(g.cmrLink);
          doc.beginningDateTime = metadata.time_start;
          doc.endingDateTime = metadata.time_end;
          doc.lastUpdateDateTime = metadata.updated;

          const fullMetadata = await cmrjs.getFullMetadata(g.cmrLink);
          if (fullMetadata && fullMetadata.DataGranule) {
            doc.productionDateTime = fullMetadata.DataGranule.ProductionDateTime;
          }
        }

        return this.create(doc);
      }
      return Promise.resolve();
    });