gistfile1.txt

 /**
     * Attach a class to a server
     *
     * Accepts a class name to use when handling requests. Any additional
     * arguments will be passed to that class' constructor when instantiated.
     *
     * See {@link setObject()} to set pre-configured object instances as request handlers.
     *
     * @param  string|object $class Class name or object instance which executes
     *             SOAP Requests at endpoint.
     * @param  string $namespace
     * @param  null|array $argv
     * @return self
     * @throws Exception\InvalidArgumentException if called more than once, or if class does not exist
     */
    public function setClass($class, $namespace = '', $argv = null)
    {
        if (isset($this->class)) {
            throw new Exception\InvalidArgumentException('A class has already been registered with this soap server instance');
        }

        if (is_object($class)) {
            return $this->setObject($class);
        }

        if (!is_string($class)) {
            throw new Exception\InvalidArgumentException(sprintf(
                'Invalid class argument (%s)',
                gettype($class)
            ));
        }

        if (!class_exists($class)) {
            throw new Exception\InvalidArgumentException(sprintf(
                'Class "%s" does not exist',
                $class
            ));
        }

        $this->class = $class;
        if (2 < func_num_args()) {
            $argv = func_get_args();
            $this->classArgs = array_slice($argv, 2);
        }

        return $this;
    }