Adds Passthrough representable

ExampleApps/UIKitExample/SwiftCurrent_UIKitTests/Storyboard/StoryboardLoadableTests.swift

@@ -116,3 +116,15 @@ class TestInputViewController: UIWorkflowItem<String, Never>, StoryboardLoadable
 
     required init?(coder: NSCoder) { nil }
 }
+
+// Literally just make sure it compiles....
+class PassthroughViewController: UIViewController, StoryboardLoadable, PassthroughFlowRepresentable {
+    var _workflowPointer: AnyFlowRepresentable?
+
+    static var storyboardId: String {
+        String(describing: Self.self)
+    }
+    static var storyboard: UIStoryboard {
+        UIStoryboard(name: "TestStoryboard", bundle: Bundle(for: Self.self))
+    }
+}

ExampleApps/UIKitExample/SwiftCurrent_UIKitTests/Storyboard/TestStoryboard.storyboard

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="17701" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="18122" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
     <device id="retina6_1" orientation="portrait" appearance="light"/>
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="17703"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="18093"/>
         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
         <capability name="System colors in document resources" minToolsVersion="11.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
@@ -11,7 +11,7 @@
         <!--Test No Input View Controller-->
         <scene sceneID="D53-J0-gxQ">
             <objects>
-                <viewController storyboardIdentifier="TestNoInputViewController" id="vfA-c5-hwQ" customClass="TestNoInputViewController" customModule="WorkflowUIKitTests" customModuleProvider="target" sceneMemberID="viewController">
+                <viewController storyboardIdentifier="TestNoInputViewController" id="vfA-c5-hwQ" customClass="TestNoInputViewController" customModule="SwiftCurrent_UIKitTests" customModuleProvider="target" sceneMemberID="viewController">
                     <view key="view" contentMode="scaleToFill" id="kXD-0r-n1P">
                         <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
@@ -26,7 +26,7 @@
         <!--Test Input View Controller-->
         <scene sceneID="B5Y-K4-ia6">
             <objects>
-                <viewController storyboardIdentifier="TestInputViewController" id="Ayy-IX-QKG" customClass="TestInputViewController" customModule="WorkflowUIKitTests" customModuleProvider="target" sceneMemberID="viewController">
+                <viewController storyboardIdentifier="TestInputViewController" id="Ayy-IX-QKG" customClass="TestInputViewController" customModule="SwiftCurrent_UIKitTests" customModuleProvider="target" sceneMemberID="viewController">
                     <view key="view" contentMode="scaleToFill" id="ida-Cw-sqr">
                         <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
@@ -38,6 +38,21 @@
             </objects>
             <point key="canvasLocation" x="796" y="134"/>
         </scene>
+        <!--Passthrough View Controller-->
+        <scene sceneID="h4u-WO-uVP">
+            <objects>
+                <viewController storyboardIdentifier="PassthroughViewController" id="vD2-ys-Nj9" customClass="PassthroughViewController" customModule="SwiftCurrent_UIKitTests" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="N0S-FD-OWF">
+                        <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <viewLayoutGuide key="safeArea" id="SEq-zr-dev"/>
+                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="AMB-YW-LZ3" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="1451" y="134"/>
+        </scene>
     </scenes>
     <resources>
         <systemColor name="systemBackgroundColor">

Sources/SwiftCurrent_UIKit/StoryboardLoadable.swift

@@ -70,6 +70,18 @@ extension StoryboardLoadable {
     }
 }
 
+@available(iOS 13.0, *)
+extension PassthroughFlowRepresentable where Self: StoryboardLoadable {
+    /// :nodoc: **WARNING: This will throw a fatal error.** Just a default implementation of the required `FlowRepresentable` initializer meant to satisfy the protocol requirements.
+    public init(with args: WorkflowInput) { // swiftlint:disable:this unavailable_function
+        // swiftlint:disable:next line_length
+        fatalError("The StoryboardLoadable protocol provided a default implementation if this initializer so that consumers didn't have to worry about it in their UIViewController. If you encounter this error and need this initializer, simply add it to \(String(describing: Self.self))")
+    }
+
+    // swiftlint:disable:next missing_docs
+    public init?(coder: NSCoder, with args: WorkflowInput) { self.init(coder: coder) }
+}
+
 @available(iOS 13.0, *)
 extension StoryboardLoadable where WorkflowInput == Never {
     // No public docs necessary, this cannot be called.