public function push(Encoding ...$encodings): self
    {
        $copy = new self();
        $copy->stack = collect($this->stack)->merge($encodings)->all();

        return $copy;
    }
public function push(Encoding ...$encodings): self
    {
        $copy = new self();
        $copy->stack = collect($this->stack)->merge($encodings)->all();

        return $copy;
    }
Return a new instance with the supplied encodings added to the end of the stack.

@param Encoding ...$encodings
@return EncodingList