<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _add_field_column(self, field):
 # pragma: no cover """Add a column for a given label field."""

        @self.add_column(name=field)
        def get_my_label(cluster_id):
            return self.cluster_meta.get(field, cluster_id)