code: def addBiosample(self):
          
          self._openRepo()
          dataset = self._repo.getDatasetByName(self._args.datasetName)
          biosample = bio_metadata.Biosample(
              dataset, self._args.biosampleName)
          biosample.populateFromJson(self._args.biosample)
          self._updateRepo(self._repo.insertBiosample, biosample)
docs: Adds a new biosample into this repo