Append-or-update metadata/measurement_chem.csv by (key, chebi_id, role)
Source: R/registry_measurement_face.R
register_measurement_chem.Rdrole is one of the_thing | component | conjugate | method_product | one_of
and via one of nerc_s27 | registry (Appendix A). Refuses a row whose role
or via is outside that vocabulary, or whose source is empty — a
measurement-face row without a source is the one thing this registry never
ships (WS-MF1 gate).