Interface FlatMapFunction<T,R> 
- Type Parameters:
 T- the type of the input to the functionR- the result type. An iterable of this type is returned from this function
- All Superinterfaces:
 Function<T,,Iterable<R>> Operation,Serializable
- All Known Subinterfaces:
 PairFlatMapFunction<T,K, V> 
- All Known Implementing Classes:
 EvaluationCalc
A function that accepts one argument and returns an 
Iterable of elements as its result.- 
Method Summary