docs: def fromDict(cls, d):
          """
          Create a new instance from attribute values provided in a dictionary.
  
          @param d: A C{dict} with keys/values for the attributes of a new
              instance of this class. Keys 'id' and 'sequence' with C{str} values
              must be provided. A 'quality' C{str} key is optional. Key 'frame'
              must have an C{int} value. Key 'reverseComplemented' must be a
              C{bool}, all keys are as described in the docstring for this class.
          @return: A new instance of this class, with values taken from C{d}.
          """
          # Make a dummy instance whose attributes we can set explicitly.
          new = cls(AARead('', ''), 0, True)
          new.id = d['id']
          new.sequence = d['sequence']
          new.quality = d.get('quality')
          new.frame = d['frame']
          new.reverseComplemented = d['reverseComplemented']
          return new