A simple PHP class which allows for chaining the setters.

Motorcycle.php

<?php
class Motorcycle {

    private $make;
    private $model;

    /**
     * Returns the motorcycle make.
     *
     * @return string The motorcycle make
     */
    public function getMake(): string
    {   
        return $this-&gt;make;
    }   

    /**
     * Sets the make of the motorcycle.
     *
     * @param string $make The motorcycle make
     *
     * @return $this
     */
    public function setMake(string $make): Motorcycle
    {   
        $this-&gt;make = $make;
    
        return $this;
    }   

    /**
     * Returns the motorcycle model.
     *
     * @return string The motorcycle model
     */
    public function getModel(): string
    {   
        return $this-&gt;model;
    }   

    /**
     * Sets the model of the motorcycle.
     *
     * @param string $model The motorcycle model
     *
     * @return $this
     */
    public function setModel(string $model): Motorcycle
    {   
        $this-&gt;model = $model;

        return $this;
    }   
}