code: func (o *OrgInvitesClient) Approve(ctx context.Context, inviteID *identity.ID) (*envelope.OrgInvite, error) {
  	invite := envelope.OrgInvite{}
  	path := "/org-invites/" + inviteID.String() + "/approve"
  	err := o.client.RoundTrip(ctx, "POST", path, nil, nil, &invite)
  	return &invite, err
  }
docs: // Approve sends an approval notification to the registry regarding a specific
  // invitation.