code: def get_box_field(self, box_key, field_key = None):
  		'''Gets one/all field in a box
  		Args:
  			box_key 		key for pipeline
  			field_key 			key for field (default: None i.e. ALL)
  			returns				status code, field dict or list thereof
  		'''
  		#does not work
  		self._raise_unimplemented_error()
  		
  		uri = '/'.join([self.api_uri,
  						self.boxes_suffix,
  						box_key,
  						self.fields_suffix
  						])
  		if field_key:
  			uri = '/'.join([uri, field_key])
  
  		return self._req('get', urif get_box_field(self, box_key, field_key = None):
  		'''Gets one/all field in a box
  		Args:
  			box_key 		key for pipeline
  			field_key 			key for field (default: None i.e. ALL)
  			returns				status code, field dict or list thereof
  		'''
  		#does not work
  		self._raise_unimplemented_error()
  		
  		uri = '/'.join([self.api_uri,
  						self.boxes_suffix,
  						box_key,
  						self.fields_suffix
  						])
  		if field_key:
  			uri = '/'.join([uri, field_key])
  
  		return self._req('get', uri)
docs: Gets one/all field in a box
  		Args:
  			box_key 		key for pipeline
  			field_key 			key for field (default: None i.e. ALL)
  			returns				status code, field dict or list thereof