def registerEditor( self, editorName ) :

		if self.__registeredEditors not in editorName :
			self.__registeredEditors.append( editorName )

	## Deregisters a previously registered editor, this makes it unavailable to the
	# user when creating new layouts.
dataset/ETHPy150Open ImageEngine/gaffer/python/GafferUI/Layouts.py/Layouts.registerEditor/swapped operands of `not in`