$appends variables function got additional 3 times execution

[mahadi-siregar]

Q	A
Bug?	yes
New Feature?	no
Framework	Laravel
Framework version	5.5.y & ^8.0
Package version	v2.0.0-alpha1 & ^3.0
PHP version	7.x.y

Actual Behaviour

get{$Variable}Attribute of $appends variable on the eloquent model got 3 times additional execution when the response returned using single item response function (return $this->response->item)

Steps to Reproduce

• add $appends variable on the model
• write a log on the get{$Variable}Attribute function and the log will written 3 times for each item