code: func (kp *Keypairs) Get(publicKeyID *identity.ID) (*ClaimedKeyPair, error) {
  	if publicKeyID == nil {
  		return nil, errors.New("Invalid PublicKeyID provided to get keypair")
  	}
  
  	ckp, ok := kp.idIndex[*publicKeyID]
  	if !ok {
  		return nil, ErrPublicKeyNotFound
  	}
  
  	return &ckp, nil
  }
docs: // Get returns the ClaimedKeyPair for the given public key id