fails:Module#attr_writer creates a setter for each given attribute name
fails:Module#attr_writer allows for adding an attr_writer to an immediate
fails:Module#attr_writer converts non string/symbol/fixnum names to strings using to_str
fails:Module#attr_writer raises a TypeError when the given names can't be converted to strings using to_str
fails:Module#attr_writer applies current visibility to methods created
fails:Module#attr_writer is a private method
