Infection

User.php

<?php

class User
{
    // ...
    
    public function isAdmin()
    {
        if ($this->status === self::ADMIN) {
           return true;
        }

        return false;
    }
}

UserFunction.php.diff

<?php

class User
{
    // ...
    
-   public function isAdmin()
+   protected function isAdmin()
    {
        if ($this->status === self::ADMIN) {
            return true;
        }

        return false;
    }
}

UserNegated.php.diff

<?php

class User
{
    // ...
    
    public function isAdmin()
    {
-       if ($this->status === self::ADMIN) {
+       if ($this->status !== self::ADMIN) {
            return true;
        }

        return false;
    }
}

UserReturn.php.diff

<?php

class User
{
    // ...
    
    public function isAdmin()
    {
        if ($this->status === self::ADMIN) {
-           return true;
+           return false;
        }

        return false;
    }
}