Use id<NSCopying> as key instead of Class<NSCopying> in FLEXObjectExplorerFactory

Classes/ObjectExplorers/FLEXObjectExplorerFactory.m

@@ -21,7 +21,7 @@
 #import "FLEXUtility.h"
 
 @implementation FLEXObjectExplorerFactory
-static NSMutableDictionary<Class, Class> *classesToRegisteredSections = nil;
+static NSMutableDictionary<id<NSCopying>, Class> *classesToRegisteredSections = nil;
 
 + (void)initialize {
     if (self == [FLEXObjectExplorerFactory class]) {
@@ -33,9 +33,9 @@ static NSMutableDictionary<Class, Class> *classesToRegisteredSections = nil;
         // For example, if we used class names, this would result in
         // the object explorer trying to render a color preview for
         // the UIColor class object, which is not a color itself.
-        #define ClassKey(name) (Class<NSCopying>)[name class]
-        #define ClassKeyByName(str) (Class<NSCopying>)NSClassFromString(@ #str)
-        #define MetaclassKey(meta) (Class<NSCopying>)object_getClass([meta class])
+        #define ClassKey(name) (id<NSCopying>)[name class]
+        #define ClassKeyByName(str) (id<NSCopying>)NSClassFromString(@ #str)
+        #define MetaclassKey(meta) (id<NSCopying>)object_getClass([meta class])
         classesToRegisteredSections = [NSMutableDictionary dictionaryWithDictionary:@{
             MetaclassKey(NSObject)     : [FLEXClassShortcuts class],
             ClassKey(NSArray)          : [FLEXCollectionContentSection class],
@@ -75,7 +75,7 @@ static NSMutableDictionary<Class, Class> *classesToRegisteredSections = nil;
     Class sectionClass = nil;
     Class cls = object_getClass(object);
     do {
-        sectionClass = classesToRegisteredSections[(Class<NSCopying>)cls];
+        sectionClass = classesToRegisteredSections[(id<NSCopying>)cls];
     } while (!sectionClass && (cls = [cls superclass]));
 
     if (!sectionClass) {
@@ -89,7 +89,7 @@ static NSMutableDictionary<Class, Class> *classesToRegisteredSections = nil;
 }
 
 + (void)registerExplorerSection:(Class)explorerClass forClass:(Class)objectClass {
-    classesToRegisteredSections[(Class<NSCopying>)objectClass] = explorerClass;
+    classesToRegisteredSections[(id<NSCopying>)objectClass] = explorerClass;
 }
 
 #pragma mark - FLEXGlobalsEntry
@@ -184,7 +184,7 @@ static NSMutableDictionary<Class, Class> *classesToRegisteredSections = nil;
             return [self explorerViewControllerForObject:NSThread.mainThread];
         case FLEXGlobalsRowOperationQueue:
             return [self explorerViewControllerForObject:NSOperationQueue.mainQueue];
-            
+
         case FLEXGlobalsRowKeyWindow:
             return [FLEXObjectExplorerFactory
                 explorerViewControllerForObject:FLEXUtility.appKeyWindow