Example of meta-programming in PHP 5.6+ using Ruby's method_missing concept. See in action here: https://3v4l.org/pfWTh

method_missing-in-php.php

<?php

class Sample
{
    private $name;
    
    // Name is required!
    public function __construct($name) {
        $this->setName($name);
    }

    public function setName($name) {
        $this->name = $name;
    }
    
    public function getName()
    {
        return $this->name;
    }
}

class ModuleSample
{
    /**
     * @var Sample
     */
    private $originalSample;
    
    public function __construct(Sample $originalSample)
    {
        $this->originalSample = $originalSample;
    }

    public function __call($methodName, $arguments)
    {
        return $this->originalSample->$methodName(...$arguments);
    }
}

$sample = new Sample("John");
$moduleSample = new ModuleSample($sample);
$moduleSample->setName("Andrew"); // Class ModuleSample does not define a method named setName()!
echo $moduleSample->getName(); // ModuleSample forwards the method call and arguments to Sample and returns the result
// ^^^ Prints "Andrew"