PHP | ReflectionGenerator getFunction() Function

<?php

// Initializing a user-defined class Company
class Company
{
    public function GFG()
    {
        yield 0;
    }
}

// Creating a generator 'A' on the above
// class Company
$A = (new Company)->GFG();

// Using ReflectionGenerator over the 
// above generator 'A'
$B = new ReflectionGenerator($A);

// Calling the getFunction() function
$C = $B->getFunction();

// Getting the function name of the
// specified generator 'A'
var_dump($C);
?>

<?php

// Initializing a user-defined class Departments
class Departments
{
    public function Coding_Department()
    {
        yield 0;
    }
    public function HR_Department()
    {
        yield 1;
    }
    public function Marketing_Department()
    {
        yield 2;
    }
}

// Creating some generators on the above
// class Departments
$A = (new Departments)->Coding_Department();
$B = (new Departments)->HR_Department();
$C = (new Departments)->Marketing_Department();

// Using ReflectionGenerator over the 
// above generators
$D = new ReflectionGenerator($A);
$E = new ReflectionGenerator($B);
$F = new ReflectionGenerator($C);

// Calling the getFunction() function
// and getting the function name of the
// specified generators
var_dump($D->getFunction());
echo "\n";
var_dump($E->getFunction());
echo "\n";
var_dump($F->getFunction());
?>