code: func (b *BigIP) BGPInstances() (*BGPInstances, error) {
  	var bgpInstances BGPInstances
  	err, _ := b.getForEntity(&bgpInstances, uriNet, uriRouting, uriBGP)
  	if err != nil {
  		return nil, err
  	}
  
  	return &bgpInstances, nil
  }
docs: // BGPInstances returns a list of BGP instances.