docs: public void cacheConcept(Concept concept) {
          conceptCache.put(concept.id(), concept);
          if (concept.isSchemaConcept()) {
              SchemaConcept schemaConcept = concept.asSchemaConcept();
              schemaConceptCache.put(schemaConcept.label(), schemaConcept);
              labelCache.put(schemaConcept.label(), schemaConcept.labelId());
          }
      }