public function bucket_object_concatenate( $obj1, $obj2, $final_name ) {
	 
	 	$result = null;
	 	$sources = array(
	 		$obj1,
	 		$obj2
	 	);
	 	try {
	 	
	 		$this->object = $this->bucket->compose( $sources, $final_name );
	 		if( null != $this->object ) {
	 		
	 			$this->get_object_acl();
	 		
	 		}
	 		$result = $this->object;
	 	
	 	}
	 	catch( \Exception $e ) {
	
			$result = $e;
			$this->errors[$this->error_count] = $e->getServiceException()->getMessage();
			$this->error_count++;
		
		}
	 	return $result;
	 
	 }