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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def create_header(self, service_id, version_number, name, destination, source, _type=FastlyHeaderType.RESPONSE, action=FastlyHeaderAction.SET, regex=None, substitution=None, ignore_if_set=None, priority=10, response_condition=None, cache_condition=None, request_condition=None):
 		body = self._formdata({ 			"name": name, 			"dst": destination, 			"src": source, 			"type": _type, 			"action": action, 			"regex": regex, 			"substitution": substitution, 			"ignore_if_set": ignore_if_set, 			"priority": priority, 			"response_condition": response_condition, 			"request_condition": request_condition, 			"cache_condition": cache_condition, 		}, FastlyHeader.FIELDS) 		"""Creates a new Header object."""

		content = self._fetch("/service/%s/version/%d/header" % (service_id, version_number), method="POST", body=body)
		return FastlyHeader(self, content)