From 95e36ffc2d76a941dfa56fdd915c70ebc2d2fac1 Mon Sep 17 00:00:00 2001
From: "Pfeil, Scott Robert" <scott.pfeil3@verizonwireless.com>
Date: Thu, 8 Apr 2021 11:13:50 -0400
Subject: [PATCH] helper for always present

---
 .../ModelProtocols/MoleculeModelProtocol.swift        | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/MVMCoreUI/Atomic/Protocols/ModelProtocols/MoleculeModelProtocol.swift b/MVMCoreUI/Atomic/Protocols/ModelProtocols/MoleculeModelProtocol.swift
index 2823e5a5..0cd54170 100644
--- a/MVMCoreUI/Atomic/Protocols/ModelProtocols/MoleculeModelProtocol.swift
+++ b/MVMCoreUI/Atomic/Protocols/ModelProtocols/MoleculeModelProtocol.swift
@@ -21,6 +21,8 @@ public extension MoleculeModelProtocol {
     static var categoryCodingKey: String { "moleculeName" }
 }
 
+
+// Helpers made due to swift not able to reconcile which category.
 extension KeyedDecodingContainer where Key: CodingKey {
     /// Decodes to a registered molecule based on the identifier
     public func decodeMoleculeIfPresent<T>(codingKey: KeyedDecodingContainer<K>.Key) throws -> T? {
@@ -33,6 +35,15 @@ extension KeyedDecodingContainer where Key: CodingKey {
         }
         return modelT
     }
+    
+    /// Decodes to a registered molecule based on the identifier.
+    public func decodeMolecule<T>(codingKey: KeyedDecodingContainer<K>.Key) throws -> T {
+        guard let model: T = try decodeMoleculeIfPresent(codingKey: codingKey) else {
+            MVMCoreLoggingHandler.logDebugMessage(withDelegate: "ModelRegistry Error decoderErrorObjectNotPresent: \(codingKey.stringValue)")
+            throw ModelRegistry.Error.decoderErrorObjectNotPresent(codingKey: codingKey, codingPath: codingPath)
+        }
+        return model
+    }
 }
 
 public extension MoleculeModelProtocol {