Is this what you are looking for? https://github.com/openmrs/openmrs-core/blob/2.3.0/api/src/main/java/org/openmrs/Obs.java#L706
Just in case you find this useful: I18n support for all classes extending BaseOpenmrsMetadata
Is this what you are looking for? https://github.com/openmrs/openmrs-core/blob/2.3.0/api/src/main/java/org/openmrs/Obs.java#L706
Just in case you find this useful: I18n support for all classes extending BaseOpenmrsMetadata