docs: def _clean(self, value):
  		"""Perform a standardized pipline of operations across an iterable."""
  		
  		value = (str(v) for v in value)
  		
  		if self.strip:
  			value = (v.strip() for v in value)
  		
  		if not self.empty:
  			value = (v for v in value if v)
  		
  		return value