code: def check_exists(self):
  
  		'''
  		Check if resource exists, update self.exists, returns
  
  		Returns:
  			None: sets self.exists
  		'''
  
  		response = self.repo.api.http_request('HEAD', self.uri)
  		self.status_code = response.status_code
  		# resource exists
  		if self.status_code == 200:
  			self.exists = True
  		# resource no longer here
  		elif self.status_code == 410:
  			self.exists = False
  		# resource not found
  		elif self.status_code == 404:
  			self.exists = False
  		return self.existf check_exists(self):
  
  		'''
  		Check if resource exists, update self.exists, returns
  
  		Returns:
  			None: sets self.exists
  		'''
  
  		response = self.repo.api.http_request('HEAD', self.uri)
  		self.status_code = response.status_code
  		# resource exists
  		if self.status_code == 200:
  			self.exists = True
  		# resource no longer here
  		elif self.status_code == 410:
  			self.exists = False
  		# resource not found
  		elif self.status_code == 404:
  			self.exists = False
  		return self.exists
docs: Check if resource exists, update self.exists, returns
  
  		Returns:
  			None: sets self.exists