code: def get_object_class(object_type, vendor_id=0):
      
      if _debug: get_object_class._debug("get_object_class %r vendor_id=%r", object_type, vendor_id)
  
      # find the klass as given
      cls = registered_object_types.get((object_type, vendor_id))
      if _debug: get_object_class._debug("    - direct lookup: %s", repr(cls))
  
      # if the class isn't found and the vendor id is non-zero, try the standard class for the type
      if (not cls) and vendor_id:
          cls = registered_object_types.get((object_type, 0))
          if _debug: get_object_class._debug("    - default lookup: %s", repr(cls))
  
      return cls
docs: Return the class associated with an object type.