| Interface | Description | 
|---|---|
| SDKBiConsumer<T,U> | Represents an operation that accepts two input arguments and returns no result. | 
| SDKConsumer<T> | Represents an operation that accepts a single input argument and returns no result. | 
| SDKFunction<T,K> | Represents a function that accepts one argument and produces a result. | 
| SDKPredicate<T> | This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference. | 
| SDKSupplier<T> | Represents a supplier of results. | 
| SDKThrowableFunction<T,K,E extends java.lang.Throwable> | Represents a function that accepts one argument and produces a result that may be
 validated with exception. |