LazyFunction (Tapestry API - 5.7.2)

```
public interface LazyFunction<T>
```
A lazy function is used to populate a Flow incrementally. Lazy functions allow calculations to be deferred. They also support infinitely large Flows, where successive values are computed just as needed.

Since:

5.2.0

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  LazyContinuation<T> next()
  Calculates the next value for the function.

- Method Detail
  - next
```
LazyContinuation<T> next()
```
    Calculates the next value for the function. The return value is tricky: it combines the next value in the Flow with a function to compute the value after that as a LazyContinuation. Alternately, a LazyFunction can return null to indicate that it has returned all the values it can.
    
    Returns:
    
    continuation containing next value and next function, or null when no more values can be produced