ServiceMapping.php
public function getId(): string
    {
        if(!$this->id){
            $this->id   = $this->getClass();
        }
        return $this->id;
    }
public function getId(): string
    {
        if(!$this->id){
            $this->id   = $this->getClass();
        }
        return $this->id;
    }
{@inheritDoc}
@see \asbamboo\di\ServiceMappingInterface::getId()