Improvement: Simplify Initializer to get rid of unnecessary inheritance.

src/main/java/cash/z/ecc/android/sdk/Initializer.kt

@@ -16,13 +16,13 @@ import java.io.File
 /**
  * Simplified Initializer focused on starting from a ViewingKey.
  */
-class Initializer constructor(appContext: Context, onCriticalErrorHandler: ((Throwable?) -> Boolean)? = null, config: Config) : SdkSynchronizer.SdkInitializer {
-    override val context = appContext.applicationContext
-    override val rustBackend: RustBackend
-    override val network: ZcashNetwork
-    override val alias: String
-    override val host: String
-    override val port: Int
+class Initializer constructor(appContext: Context, onCriticalErrorHandler: ((Throwable?) -> Boolean)? = null, config: Config) {
+    val context = appContext.applicationContext
+    val rustBackend: RustBackend
+    val network: ZcashNetwork
+    val alias: String
+    val host: String
+    val port: Int
     val viewingKeys: List<UnifiedViewingKey>
     val birthday: WalletBirthday
 
@@ -32,7 +32,7 @@ class Initializer constructor(appContext: Context, onCriticalErrorHandler: ((Thr
      * function has a return value is so that all error handlers work with the same signature which
      * allows one function to handle all errors in simple apps.
      */
-    override var onCriticalErrorHandler: ((Throwable?) -> Boolean)? = onCriticalErrorHandler
+    var onCriticalErrorHandler: ((Throwable?) -> Boolean)? = onCriticalErrorHandler
 
     /**
      * True when accounts have been created by this initializer.

src/main/java/cash/z/ecc/android/sdk/SdkSynchronizer.kt

@@ -691,16 +691,6 @@ class SdkSynchronizer internal constructor(
         )
     }
 
-    interface SdkInitializer {
-        val context: Context
-        val rustBackend: RustBackend
-        val network: ZcashNetwork
-        val host: String
-        val port: Int
-        val alias: String
-        val onCriticalErrorHandler: ((Throwable?) -> Boolean)?
-    }
-
     interface Erasable {
         /**
          * Erase content related to this SDK.
@@ -760,7 +750,7 @@ class SdkSynchronizer internal constructor(
  */
 @Suppress("FunctionName")
 fun Synchronizer(
-    initializer: SdkSynchronizer.SdkInitializer,
+    initializer: Initializer,
     repository: TransactionRepository =
         PagedTransactionRepository(initializer.context, 1000, initializer.rustBackend.pathDataDb), // TODO: fix this pagesize bug, small pages should not crash the app. It crashes with: Uncaught Exception: android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. and is probably related to FlowPagedList
     blockStore: CompactBlockStore = CompactBlockDbStore(initializer.context, initializer.rustBackend.pathCacheDb),