Web developers can create and call a method inline based on LINQ expression. For example they can create a function named TestClient() that examines a client an return true or false based on whether they want to include it in the results: 
private bool TestClient(Client client){

return client.LastName.StartsWith(“T”);

}
 Web developers could use the TestClient method like this: 
var matches = from client in clients

where TestClient(client)

select client;