code: def drop(self):
          
          api = self._instance._client.database_admin_api
          metadata = _metadata_with_prefix(self.name)
          api.drop_database(self.name, metadata=metadata)
docs: Drop this database.
  
          See
          https://cloud.google.com/spanner/reference/rpc/google.spanner.admin.database.v1#google.spanner.admin.database.v1.DatabaseAdmin.DropDatabase