Interface CheckedFunction<I,​O,​E extends Exception>

Type Parameters:
I - The input parameter type
O - The output parameter type
E - The type thrown
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface CheckedFunction<I,​O,​E extends Exception>
A function with one input and one output which may throw a checked exception