code: public function withEntryFromProvider($key, $provider)
      {
          $this->bindings[$key] = $this->getProviderCreator($provider);
          return $this;
      }
docs: adds an entry to the map created by an injection provider
  
  @api
  @param   string                    $key
  @param   string|\stubbles\ioc\InjectionProvider  $provider
  @return  \stubbles\ioc\binding\MapBinding