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/**
* Jooby https://jooby.io
* Apache License Version 2.0 https://jooby.io/LICENSE.txt
* Copyright 2014 Edgar Espina
*/
package io.jooby;
/**
* Collection of throwable interfaces to simplify exception handling on lambdas.
*
* We do provide throwable and 100% compatible implementation of {@link java.util.function.Function}
* , {@link java.util.function.Consumer}, {@link java.lang.Runnable},
* {@link java.util.function.Supplier}, {@link java.util.function.Predicate} and
* {@link java.util.function.BiPredicate}.
*
* Examples:
*
* <pre>{@code
*
* interface Query {
* Item findById(String id) throws IOException;
* }
*
* Query query = ...
*
* List<Item> items = Arrays.asList("1", "2", "3")
* .stream()
* .map(throwingFunction(query::findById))
* .collect(Collectors.toList());
*
* }</pre>
*
*
* @author edgar
*/
public final class SneakyThrows {
/**
* Not allowed.
*/
private SneakyThrows() {
}
/**
* Throwable version of {@link Predicate}.
*
* @param <V> Input type.
*/
public interface Predicate<V> extends java.util.function.Predicate<V> {
/**
* Apply the predicate.
*
* @param v Input value.
* @return True or false.
* @throws Exception If something goes wrong.
*/
boolean tryTest(V v) throws Exception;
/**
* Apply the predicate.
*
* @param v Input value.
* @return True or false.
*/
@Override default boolean test(V v) {
try {
return tryTest(v);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Throwable version of {@link Predicate}.
*
* @param <V1> Input type.
* @param <V2> Input type.
*/
public interface Predicate2<V1, V2> extends java.util.function.BiPredicate<V1, V2> {
/**
* Apply the predicate.
*
* @param v1 Input value.
* @param v2 Input value.
* @return True or false.
* @throws Exception If something goes wrong.
*/
boolean tryTest(V1 v1, V2 v2) throws Exception;
/**
* Apply the predicate.
*
* @param v1 Input value.
* @param v2 Input value.
* @return True or false.
*/
@Override default boolean test(V1 v1, V2 v2) {
try {
return tryTest(v1, v2);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Throwable version of {@link java.lang.Runnable}.
*/
@FunctionalInterface
public interface Runnable extends java.lang.Runnable {
/**
* Run task.
*
* @throws Exception Is something goes wrong.
*/
void tryRun() throws Exception;
/**
* Run task.
*/
@Override default void run() {
try {
tryRun();
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Throwable version of {@link java.util.function.Supplier}.
*
* @param <V> Result type.
*/
@FunctionalInterface
public interface Supplier<V> extends java.util.function.Supplier<V> {
/**
* Computes/retrieves a value.
*
* @return A value.
* @throws Exception Is something goes wrong.
*/
V tryGet() throws Exception;
/**
* Computes/retrieves a value.
*
* @return A value.
*/
@Override default V get() {
try {
return tryGet();
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Throwable version of {@link java.util.function.Consumer}.
*
* This class rethrow any exception using the {@link #propagate(Throwable)} technique.
*
* @param <V> Input type.
*/
@FunctionalInterface
public interface Consumer<V> extends java.util.function.Consumer<V> {
/**
* Performs this operation on the given argument.
*
* @param value Argument.
* @throws Exception If something goes wrong.
*/
void tryAccept(V value) throws Exception;
@Override default void accept(V v) {
try {
tryAccept(v);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Two argument version of {@link Consumer}.
*
* This class rethrow any exception using the {@link #propagate(Throwable)} technique.
*
* @param <V1> Input type.
* @param <V2> Input type.
*/
@FunctionalInterface
public interface Consumer2<V1, V2> extends java.util.function.BiConsumer<V1, V2> {
/**
* Performs this operation on the given argument.
*
* @param v1 Argument.
* @param v2 Argument.
* @throws Exception If something goes wrong.
*/
void tryAccept(V1 v1, V2 v2) throws Exception;
/**
* Performs this operation on the given argument.
*
* @param v1 Argument.
* @param v2 Argument.
*/
default void accept(V1 v1, V2 v2) {
try {
tryAccept(v1, v2);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Three argument version of {@link Consumer}.
*
* This class rethrow any exception using the {@link #propagate(Throwable)} technique.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <V3> Input type.
*/
@FunctionalInterface
public interface Consumer3<V1, V2, V3> {
/**
* Performs this operation on the given argument.
*
* @param v1 Argument.
* @param v2 Argument.
* @param v3 Argument.
* @throws Exception If something goes wrong.
*/
void tryAccept(V1 v1, V2 v2, V3 v3) throws Exception;
/**
* Performs this operation on the given arguments and throw any exception using
* {@link #propagate(Throwable)} method.
*
* @param v1 Argument.
* @param v2 Argument.
* @param v3 Argument.
*/
default void accept(V1 v1, V2 v2, V3 v3) {
try {
tryAccept(v1, v2, v3);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Four argument version of {@link Consumer}.
*
* This class rethrow any exception using the {@link #propagate(Throwable)} technique.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <V3> Input type.
* @param <V4> Input type.
*/
@FunctionalInterface
public interface Consumer4<V1, V2, V3, V4> {
/**
* Performs this operation on the given arguments.
*
* @param v1 Argument.
* @param v2 Argument.
* @param v3 Argument.
* @param v4 Argument.
* @throws Exception If something goes wrong.
*/
void tryAccept(V1 v1, V2 v2, V3 v3, V4 v4) throws Exception;
/**
* Performs this operation on the given arguments and throw any exception using
* {@link #propagate(Throwable)} method.
*
* @param v1 Argument.
* @param v2 Argument.
* @param v3 Argument.
* @param v4 Argument.
*/
default void accept(V1 v1, V2 v2, V3 v3, V4 v4) {
try {
tryAccept(v1, v2, v3, v4);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Five argument version of {@link Consumer}.
*
* This class rethrow any exception using the {@link #propagate(Throwable)} technique.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <V3> Input type.
* @param <V4> Input type.
* @param <V5> Input type.
*/
@FunctionalInterface
public interface Consumer5<V1, V2, V3, V4, V5> {
/**
* Performs this operation on the given arguments.
*
* @param v1 Argument.
* @param v2 Argument.
* @param v3 Argument.
* @param v4 Argument.
* @param v5 Argument.
* @throws Exception If something goes wrong.
*/
void tryAccept(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5) throws Exception;
/**
* Performs this operation on the given arguments and throw any exception using
* {@link #propagate(Throwable)} method.
*
* @param v1 Argument.
* @param v2 Argument.
* @param v3 Argument.
* @param v4 Argument.
* @param v5 Argument.
*/
default void accept(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5) {
try {
tryAccept(v1, v2, v3, v4, v5);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Six argument version of {@link Consumer}.
*
* This class rethrow any exception using the {@link #propagate(Throwable)} technique.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <V3> Input type.
* @param <V4> Input type.
* @param <V5> Input type.
* @param <V6> Input type.
*/
@FunctionalInterface
public interface Consumer6<V1, V2, V3, V4, V5, V6> {
/**
* Performs this operation on the given arguments.
*
* @param v1 Argument.
* @param v2 Argument.
* @param v3 Argument.
* @param v4 Argument.
* @param v5 Argument.
* @param v6 Argument.
* @throws Exception If something goes wrong.
*/
void tryAccept(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6) throws Exception;
/**
* Performs this operation on the given arguments and throw any exception using
* {@link #propagate(Throwable)} method.
*
* @param v1 Argument.
* @param v2 Argument.
* @param v3 Argument.
* @param v4 Argument.
* @param v5 Argument.
* @param v6 Argument.
*/
default void accept(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6) {
try {
tryAccept(v1, v2, v3, v4, v5, v6);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Seven argument version of {@link Consumer}.
*
* This class rethrow any exception using the {@link #propagate(Throwable)} technique.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <V3> Input type.
* @param <V4> Input type.
* @param <V5> Input type.
* @param <V6> Input type.
* @param <V7> Input type.
*/
@FunctionalInterface
public interface Consumer7<V1, V2, V3, V4, V5, V6, V7> {
/**
* Performs this operation on the given arguments.
*
* @param v1 Argument.
* @param v2 Argument.
* @param v3 Argument.
* @param v4 Argument.
* @param v5 Argument.
* @param v6 Argument.
* @param v7 Argument.
* @throws Exception If something goes wrong.
*/
void tryAccept(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6, V7 v7) throws Exception;
/**
* Performs this operation on the given arguments and throw any exception using
* {@link #propagate(Throwable)} method.
*
* @param v1 Argument.
* @param v2 Argument.
* @param v3 Argument.
* @param v4 Argument.
* @param v5 Argument.
* @param v6 Argument.
* @param v7 Argument.
*/
default void accept(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6, V7 v7) {
try {
tryAccept(v1, v2, v3, v4, v5, v6, v7);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Seven argument version of {@link Consumer}.
*
* This class rethrow any exception using the {@link #propagate(Throwable)} technique.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <V3> Input type.
* @param <V4> Input type.
* @param <V5> Input type.
* @param <V6> Input type.
* @param <V7> Input type.
* @param <V8> Input type.
*/
@FunctionalInterface
public interface Consumer8<V1, V2, V3, V4, V5, V6, V7, V8> {
/**
* Performs this operation on the given arguments.
*
* @param v1 Argument.
* @param v2 Argument.
* @param v3 Argument.
* @param v4 Argument.
* @param v5 Argument.
* @param v6 Argument.
* @param v7 Argument.
* @param v8 Argument.
* @throws Exception If something goes wrong.
*/
void tryAccept(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6, V7 v7, V8 v8) throws Exception;
/**
* Performs this operation on the given arguments and throw any exception using
* {@link #propagate(Throwable)} method.
*
* @param v1 Argument.
* @param v2 Argument.
* @param v3 Argument.
* @param v4 Argument.
* @param v5 Argument.
* @param v6 Argument.
* @param v7 Argument.
* @param v8 Argument.
*/
default void accept(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6, V7 v7, V8 v8) {
try {
tryAccept(v1, v2, v3, v4, v5, v6, v7, v8);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Throwable version of {@link java.util.function.Function}.
*
* The {@link #apply(Object)} method throws checked exceptions using {@link #propagate(Throwable)} method.
*
* @param <V> Input type.
* @param <R> Output type.
*/
@FunctionalInterface
public interface Function<V, R> extends java.util.function.Function<V, R> {
/**
* Apply this function to the given argument and produces a result.
*
* @param value Input argument.
* @return Result.
* @throws Exception If something goes wrong.
*/
R tryApply(V value) throws Exception;
/**
* Apply this function to the given argument and produces a result.
*
* @param v Input argument.
* @return Result.
*/
@Override default R apply(V v) {
try {
return tryApply(v);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Throwable version of {@link java.util.function.BiFunction}.
*
* The {@link #apply(Object, Object)} method throws checked exceptions using {@link #propagate(Throwable)} method.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <R> Output type.
*/
@FunctionalInterface
public interface Function2<V1, V2, R> extends java.util.function.BiFunction<V1, V2, R> {
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @return Result.
* @throws Exception If something goes wrong.
*/
R tryApply(V1 v1, V2 v2) throws Exception;
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @return Result.
*/
@Override default R apply(V1 v1, V2 v2) {
try {
return tryApply(v1, v2);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Function with three arguments.
*
* The {@link #apply(Object, Object, Object)} method throws checked exceptions using {@link #propagate(Throwable)} method.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <V3> Input type.
* @param <R> Output type.
*/
@FunctionalInterface
public interface Function3<V1, V2, V3, R> {
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @param v3 Input argument.
* @return Result.
* @throws Exception If something goes wrong.
*/
R tryApply(V1 v1, V2 v2, V3 v3) throws Exception;
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @param v3 Input argument.
* @return Result.
*/
default R apply(V1 v1, V2 v2, V3 v3) {
try {
return tryApply(v1, v2, v3);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Function with four arguments.
*
* The {@link #apply(Object, Object, Object, Object)} method throws checked exceptions using {@link #propagate(Throwable)} method.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <V3> Input type.
* @param <V4> Input type.
* @param <R> Output type.
*/
@FunctionalInterface
public interface Function4<V1, V2, V3, V4, R> {
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @param v3 Input argument.
* @param v4 Input argument.
* @return Result.
* @throws Exception If something goes wrong.
*/
R tryApply(V1 v1, V2 v2, V3 v3, V4 v4) throws Exception;
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @param v3 Input argument.
* @param v4 Input argument.
* @return Result.
*/
default R apply(V1 v1, V2 v2, V3 v3, V4 v4) {
try {
return tryApply(v1, v2, v3, v4);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Function with five arguments.
*
* The {@link #apply(Object, Object, Object, Object, Object)} method throws checked exceptions using {@link #propagate(Throwable)} method.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <V3> Input type.
* @param <V4> Input type.
* @param <V5> Input type.
* @param <R> Output type.
*/
@FunctionalInterface
public interface Function5<V1, V2, V3, V4, V5, R> {
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @param v3 Input argument.
* @param v4 Input argument.
* @param v5 Input argument.
* @return Result.
* @throws Exception If something goes wrong.
*/
R tryApply(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5) throws Exception;
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @param v3 Input argument.
* @param v4 Input argument.
* @param v5 Input argument.
* @return Result.
*/
default R apply(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5) {
try {
return tryApply(v1, v2, v3, v4, v5);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Function with six arguments.
*
* The {@link #apply(Object, Object, Object, Object, Object, Object)} method throws checked exceptions using {@link #propagate(Throwable)} method.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <V3> Input type.
* @param <V4> Input type.
* @param <V5> Input type.
* @param <V6> Input type.
* @param <R> Output type.
*/
@FunctionalInterface
public interface Function6<V1, V2, V3, V4, V5, V6, R> {
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @param v3 Input argument.
* @param v4 Input argument.
* @param v5 Input argument.
* @param v6 Input argument.
* @return Result.
* @throws Exception If something goes wrong.
*/
R tryApply(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6) throws Exception;
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @param v3 Input argument.
* @param v4 Input argument.
* @param v5 Input argument.
* @param v6 Input argument.
* @return Result.
*/
default R apply(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6) {
try {
return tryApply(v1, v2, v3, v4, v5, v6);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Function with seven arguments.
*
* The {@link #apply(Object, Object, Object, Object, Object, Object, Object)} method throws checked exceptions using {@link #propagate(Throwable)} method.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <V3> Input type.
* @param <V4> Input type.
* @param <V5> Input type.
* @param <V6> Input type.
* @param <V7> Input type.
* @param <R> Output type.
*/
@FunctionalInterface
public interface Function7<V1, V2, V3, V4, V5, V6, V7, R> {
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @param v3 Input argument.
* @param v4 Input argument.
* @param v5 Input argument.
* @param v6 Input argument.
* @param v7 Input argument.
* @return Result.
* @throws Exception If something goes wrong.
*/
R tryApply(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6, V7 v7) throws Exception;
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @param v3 Input argument.
* @param v4 Input argument.
* @param v5 Input argument.
* @param v6 Input argument.
* @param v7 Input argument.
* @return Result.
*/
default R apply(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6, V7 v7) {
try {
return tryApply(v1, v2, v3, v4, v5, v6, v7);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Function with seven arguments.
*
* The {@link #apply(Object, Object, Object, Object, Object, Object, Object, Object)} method throws checked exceptions using {@link #propagate(Throwable)} method.
*
* @param <V1> Input type.
* @param <V2> Input type.
* @param <V3> Input type.
* @param <V4> Input type.
* @param <V5> Input type.
* @param <V6> Input type.
* @param <V7> Input type.
* @param <V8> Input type.
* @param <R> Output type.
*/
@FunctionalInterface
public interface Function8<V1, V2, V3, V4, V5, V6, V7, V8, R> {
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @param v3 Input argument.
* @param v4 Input argument.
* @param v5 Input argument.
* @param v6 Input argument.
* @param v7 Input argument.
* @param v8 Input argument.
* @return Result.
* @throws Exception If something goes wrong.
*/
R tryApply(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6, V7 v7, V8 v8) throws Exception;
/**
* Apply this function to the given argument and produces a result.
*
* @param v1 Input argument.
* @param v2 Input argument.
* @param v3 Input argument.
* @param v4 Input argument.
* @param v5 Input argument.
* @param v6 Input argument.
* @param v7 Input argument.
* @param v8 Input argument.
* @return Result.
*/
default R apply(V1 v1, V2 v2, V3 v3, V4 v4, V5 v5, V6 v6, V7 v7, V8 v8) {
try {
return tryApply(v1, v2, v3, v4, v5, v6, v7, v8);
} catch (Exception x) {
throw propagate(x);
}
}
}
/**
* Factory method for predicate.
*
* @param predicate Predicate.
* @param <V> Type 1.
* @return A throwing predicate.
*/
public static <V> Predicate<V> throwingPredicate(Predicate<V> predicate) {
return predicate;
}
/**
* Factory method for predicate.
*
* @param predicate Predicate.
* @param <V1> Type 1.
* @param <V2> Type 2.
* @return A throwing predicate.
*/
public static <V1, V2> Predicate2<V1, V2> throwingPredicate(Predicate2<V1, V2> predicate) {
return predicate;
}
/**
* Factory method for {@link Runnable}.
*
* @param action Runnable.
* @return Same runnable.
*/
public static Runnable throwingRunnable(Runnable action) {
return action;
}
/**
* Factory method for {@link Supplier}.
*
* @param fn Supplier.
* @param <V> Resulting value.
* @return Same supplier.
*/
public static <V> Supplier<V> throwingSupplier(Supplier<V> fn) {
return fn;
}
/**
* Factory method for {@link Function} and {@link java.util.function.Function}.
*
* @param fn Function.
* @param <V> Input value.
* @param <R> Result value.
* @return Same supplier.
*/
public static <V, R> Function<V, R> throwingFunction(Function<V, R> fn) {
return fn;
}
/**
* Factory method for {@link Function2} and {@link java.util.function.BiFunction}.
*
* @param fn Function.
* @param <V1> Input value.
* @param <V2> Input value.
* @param <R> Result value.
* @return Same supplier.
*/
public static <V1, V2, R> Function2<V1, V2, R> throwingFunction(Function2<V1, V2, R> fn) {
return fn;
}
/**
* Factory method for throwing function.
*
* @param fn SneakyThrows function.
* @param <V1> Type 1.
* @param <V2> Type 2.
* @param <V3> Type 3.
* @param <R> Return type.
* @return SneakyThrows function.
*/
public static <V1, V2, V3, R> Function3<V1, V2, V3, R> throwingFunction(
Function3<V1, V2, V3, R> fn) {
return fn;
}
/**
* Factory method for throwing function.
*
* @param fn SneakyThrows function.
* @param <V1> Type 1.
* @param <V2> Type 2.
* @param <V3> Type 3.
* @param <V4> Type 4.
* @param <R> Return type.
* @return SneakyThrows function.
*/
public static <V1, V2, V3, V4, R> Function4<V1, V2, V3, V4, R> throwingFunction(
Function4<V1, V2, V3, V4, R> fn) {
return fn;
}
/**
* Factory method for throwing function.
*
* @param fn SneakyThrows function.
* @param <V1> Type 1.
* @param <V2> Type 2.
* @param <V3> Type 3.
* @param <V4> Type 4.
* @param <V5> Type 5.
* @param <R> Return type.
* @return SneakyThrows function.
*/
public static <V1, V2, V3, V4, V5, R> Function5<V1, V2, V3, V4, V5, R> throwingFunction(
Function5<V1, V2, V3, V4, V5, R> fn) {
return fn;
}
/**
* Factory method for throwing function.
*
* @param fn SneakyThrows function.
* @param <V1> Type 1.
* @param <V2> Type 2.
* @param <V3> Type 3.
* @param <V4> Type 4.
* @param <V5> Type 5.
* @param <V6> Type 6.
* @param <R> Return type.
* @return SneakyThrows function.
*/
public static <V1, V2, V3, V4, V5, V6, R> Function6<V1, V2, V3, V4, V5, V6, R> throwingFunction(
Function6<V1, V2, V3, V4, V5, V6, R> fn) {
return fn;
}
/**
* Factory method for throwing function.
*
* @param fn SneakyThrows function.
* @param <V1> Type 1.
* @param <V2> Type 2.
* @param <V3> Type 3.
* @param <V4> Type 4.
* @param <V5> Type 5.
* @param <V6> Type 6.
* @param <V7> Type 7.
* @param <R> Return type.
* @return SneakyThrows function.
*/
public static <V1, V2, V3, V4, V5, V6, V7, R> Function7<V1, V2, V3, V4, V5, V6, V7, R> throwingFunction(
Function7<V1, V2, V3, V4, V5, V6, V7, R> fn) {