Fix

Author: rintaro

Sources/JExtractSwiftLib/SwiftTypes/SwiftType.swift

@@ -299,8 +299,17 @@ extension SwiftType {
     lookupContext: SwiftTypeLookupContext
   ) throws {
     // Look up the imported types by name to resolve it to a nominal type.
-    guard let typeDecl = try lookupContext.unqualifiedLookup(name: Identifier(name)!, from: name) else {
-      throw TypeTranslationError.unknown(originalType)
+    let typeDecl: SwiftTypeDeclaration?
+    if let parent {
+      guard let parentDecl = parent.asNominalTypeDeclaration else {
+        throw TypeTranslationError.unknown(originalType)
+      }
+      typeDecl = lookupContext.symbolTable.lookupNestedType(name.text, parent: parentDecl)
+    } else {
+      typeDecl = try lookupContext.unqualifiedLookup(name: Identifier(name)!, from: name)
+    }
+    guard let typeDecl else {
+     throw TypeTranslationError.unknown(originalType)
     }
 
     if let nominalDecl = typeDecl as? SwiftNominalTypeDeclaration {