Call another method inside of method closure

Is it possible to add another method inside of a closure, and if so, how to properly do it?
For instance,

->hint(function($get){
     if ($get('stock') == 0){
        ('testing') // this is the hint text I want tot return if true;
}

->hint(function($get){
     if ($get('stock') == 0){
        ('testing') // this is the hint text I want tot return if true;
}

->hint(function($get){
     if ($get('stock') == 0){
        ('testing') // this is the hint text I want tot return if true;
}

->hint(function($get){
     if ($get('stock') == 0){
        ('testing') // this is the hint text I want tot return if true;
}

As example, I'm grabbing the value of 'stock' field, and run a conditional statement. And if conditions are met, I want to show the hint text, and maybe add another method to that field, like

hintIcon()

hintIcon()

hintIcon()

hintIcon() of

hintColor()

hintColor()

hintColor()

hintColor()

Call another method inside of method closure

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