code: public function bindList($name)
      {
          if (!isset($this->listBindings[$name])) {
              $this->listBindings[$name] = $this->addBinding(new ListBinding($name));
          }
  
          return $this->listBindings[$name];
      }
docs: bind to a list
  
  If a list with given name already exists it will return exactly this list
  to add more values to it.
  
  @param   string  $name
  @return  \stubbles\ioc\binding\ListBinding
  @since   2.0.0