code: def _is_converted_class(java_class):
      
      if not java_class:
          return False
  
      return (
          JAVA_MAPS_PATTERN.match(java_class) is not None
          or JAVA_LISTS_PATTERN.match(java_class) is not None
          or JAVA_SETS_PATTERN.match(java_class) is not None
      )
docs: Checks if the given Java class is one we *might* have set up