public WindowsAzureADHandler(ClaimProvider issuer)
: base(issuer)
{
this.signingKeyThumbprint = issuer.Parameters["signingKeyThumbprint"];
this.tenantId = issuer.Parameters["tenantId"];
this.appPrincipalId = issuer.Parameters["appPrincipalId"];
this.realmFormat = issuer.Parameters["realmFormat"];
}