Run class method at end of chain

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So this is an OOP related question, but I was wondering if it was possible to call a function at the end of a chain, after it's all been run.

This was my code to run before wanting a function to be used explicitly when the chained methods are finished and I want to print or opt the content:

$something = $class('Paramater')->Foo(true)->opt();

Whereas, if we remove the end method we're just given the $this returned from the Foo() function, so:

$something = $class('Paramater')->Foo(true);

Would return us the actual class variable in $something.

What I'd like to happen is at the end of the chain, there might be a magic method that's called when the chain is finished.

So, $class('Parameter')->Foo(true) would instead return the value of opt() like used before, without needing the ending function to close the chain.

It's not so hard to simply add the chain-ending function at the end of a chain, but it helps the code look cleaner and easier to read without this chain ending function being used.

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