public function add(ServiceMappingInterface $ServiceMapping): ServiceMappingCollectionInterface
    {
        $this->service_mappings[$ServiceMapping->getId()]  = $ServiceMapping;

        return $this;
    }
public function add(ServiceMappingInterface $ServiceMapping): ServiceMappingCollectionInterface
    {
        $this->service_mappings[$ServiceMapping->getId()]  = $ServiceMapping;

        return $this;
    }
{@inheritDoc}
@see \asbamboo\di\ServiceMappingCollectionInterface::add()