Allow executing without a mapper

src/main/java/com/zackehh/jackson/Jive.java

@@ -20,7 +20,6 @@
 import com.zackehh.jackson.scope.SafeExecution;
 
 import javax.annotation.Nonnull;
-import java.io.IOException;
 import java.math.BigDecimal;
 import java.math.BigInteger;
 import java.util.AbstractMap;
@@ -30,6 +29,7 @@
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import java.util.concurrent.Callable;
 import java.util.function.BiFunction;
 import java.util.function.BinaryOperator;
 import java.util.function.Function;
@@ -110,7 +110,7 @@ public static ArrayNode drop(ArrayNode node, int count) {
     }
 
     /**
-     * Executes a scoped function with the provided ObjectMapper.
+     * Executes a scoped function with caught Exceptions.
      *
      * Any thrown IOException instances will be caught and will
      * return an empty Optional to the user. In the case of a
@@ -120,19 +120,38 @@ public static ArrayNode drop(ArrayNode node, int count) {
      * This function can be used to remove the need to manually
      * handle exceptions when calling ObjectMapper functions.
      *
-     * @param mapper the ObjectMapper instance to execute with.
      * @param execution the execution implementation to call.
      * @param <T> the type of the block return value.
      * @return an Optional containing a potential result.
      */
-    public static <T> Optional<T> execute(ObjectMapper mapper, SafeExecution<T> execution) {
+    public static <T> Optional<T> execute(Callable<T> execution) {
         try {
-            return Optional.ofNullable(execution.apply(mapper));
+            return Optional.ofNullable(execution.call());
         } catch(Exception e) {
             return Optional.empty();
         }
     }
 
+    /**
+     * Executes a scoped function with the provided ObjectMapper.
+     *
+     * Any thrown Exception instances will be caught and will
+     * return an empty Optional to the user. In the case of a
+     * successful execution, the return value of the called block
+     * will be wrapped into an Optional and returned.
+     *
+     * This function can be used to remove the need to manually
+     * handle exceptions when calling ObjectMapper functions.
+     *
+     * @param mapper the ObjectMapper instance to execute with.
+     * @param execution the execution implementation to call.
+     * @param <T> the type of the block return value.
+     * @return an Optional containing a potential result.
+     */
+    public static <T> Optional<T> execute(ObjectMapper mapper, SafeExecution<T> execution) {
+        return execute(() -> execution.apply(mapper));
+    }
+
     /**
      * Determines whether all JsonNodes within an ArrayNode fit
      * a provided Predicate condition.