code: public Namer getOneToOneNamer(Attribute fromAttribute, Namer targetEntityNamer) {
          // configuration
          Namer result = getOneToOneNamerFromConf(fromAttribute.getColumnConfig(), targetEntityNamer);
  
          // fall back
          if (result == null) {
              result = getXToOneNamerFallBack(fromAttribute, targetEntityNamer);
          }
  
          return result;
      }
docs: Compute the namer for the Java field marked by @OneToOne
  
  @param fromAttribute     the fk column config
  @param targetEntityNamer