diff --git a/firebase-common-internal/api/android/firebase-common-internal.api b/firebase-common-internal/api/android/firebase-common-internal.api
index 44214b70f..49e83fd95 100644
--- a/firebase-common-internal/api/android/firebase-common-internal.api
+++ b/firebase-common-internal/api/android/firebase-common-internal.api
@@ -5,15 +5,12 @@ public final class dev/gitlive/firebase/internal/AndroidEncodedObject {
 
 public final class dev/gitlive/firebase/internal/DecodeSettingsImpl : dev/gitlive/firebase/DecodeSettings {
 	public fun <init> ()V
-	public fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
 }
 
 public final class dev/gitlive/firebase/internal/DecodeSettingsImpl$Builder : dev/gitlive/firebase/DecodeSettings$Builder {
 	public fun <init> ()V
-	public fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
-	public fun setPolymorphicStructure (Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;)V
 	public fun setSerializersModule (Lkotlinx/serialization/modules/SerializersModule;)V
 }
 
@@ -26,10 +23,8 @@ public final class dev/gitlive/firebase/internal/DecodersKt {
 public final class dev/gitlive/firebase/internal/EncodeDecodeSettingsBuilderImpl : dev/gitlive/firebase/EncodeDecodeSettingsBuilder {
 	public fun <init> ()V
 	public fun getEncodeDefaults ()Z
-	public fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
 	public fun setEncodeDefaults (Z)V
-	public fun setPolymorphicStructure (Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;)V
 	public fun setSerializersModule (Lkotlinx/serialization/modules/SerializersModule;)V
 }
 
@@ -43,7 +38,6 @@ public final class dev/gitlive/firebase/internal/EncodeSettingsImpl : dev/gitliv
 	public final fun component2 ()Lkotlinx/serialization/modules/SerializersModule;
 	public fun equals (Ljava/lang/Object;)Z
 	public fun getEncodeDefaults ()Z
-	public fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
 	public fun hashCode ()I
 	public fun toString ()Ljava/lang/String;
@@ -52,10 +46,8 @@ public final class dev/gitlive/firebase/internal/EncodeSettingsImpl : dev/gitliv
 public final class dev/gitlive/firebase/internal/EncodeSettingsImpl$Builder : dev/gitlive/firebase/EncodeSettings$Builder {
 	public fun <init> ()V
 	public fun getEncodeDefaults ()Z
-	public fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
 	public fun setEncodeDefaults (Z)V
-	public fun setPolymorphicStructure (Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;)V
 	public fun setSerializersModule (Lkotlinx/serialization/modules/SerializersModule;)V
 }
 
diff --git a/firebase-common-internal/api/jvm/firebase-common-internal.api b/firebase-common-internal/api/jvm/firebase-common-internal.api
index 44214b70f..49e83fd95 100644
--- a/firebase-common-internal/api/jvm/firebase-common-internal.api
+++ b/firebase-common-internal/api/jvm/firebase-common-internal.api
@@ -5,15 +5,12 @@ public final class dev/gitlive/firebase/internal/AndroidEncodedObject {
 
 public final class dev/gitlive/firebase/internal/DecodeSettingsImpl : dev/gitlive/firebase/DecodeSettings {
 	public fun <init> ()V
-	public fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
 }
 
 public final class dev/gitlive/firebase/internal/DecodeSettingsImpl$Builder : dev/gitlive/firebase/DecodeSettings$Builder {
 	public fun <init> ()V
-	public fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
-	public fun setPolymorphicStructure (Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;)V
 	public fun setSerializersModule (Lkotlinx/serialization/modules/SerializersModule;)V
 }
 
@@ -26,10 +23,8 @@ public final class dev/gitlive/firebase/internal/DecodersKt {
 public final class dev/gitlive/firebase/internal/EncodeDecodeSettingsBuilderImpl : dev/gitlive/firebase/EncodeDecodeSettingsBuilder {
 	public fun <init> ()V
 	public fun getEncodeDefaults ()Z
-	public fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
 	public fun setEncodeDefaults (Z)V
-	public fun setPolymorphicStructure (Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;)V
 	public fun setSerializersModule (Lkotlinx/serialization/modules/SerializersModule;)V
 }
 
@@ -43,7 +38,6 @@ public final class dev/gitlive/firebase/internal/EncodeSettingsImpl : dev/gitliv
 	public final fun component2 ()Lkotlinx/serialization/modules/SerializersModule;
 	public fun equals (Ljava/lang/Object;)Z
 	public fun getEncodeDefaults ()Z
-	public fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
 	public fun hashCode ()I
 	public fun toString ()Ljava/lang/String;
@@ -52,10 +46,8 @@ public final class dev/gitlive/firebase/internal/EncodeSettingsImpl : dev/gitliv
 public final class dev/gitlive/firebase/internal/EncodeSettingsImpl$Builder : dev/gitlive/firebase/EncodeSettings$Builder {
 	public fun <init> ()V
 	public fun getEncodeDefaults ()Z
-	public fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
 	public fun setEncodeDefaults (Z)V
-	public fun setPolymorphicStructure (Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;)V
 	public fun setSerializersModule (Lkotlinx/serialization/modules/SerializersModule;)V
 }
 
diff --git a/firebase-common/api/android/firebase-common.api b/firebase-common/api/android/firebase-common.api
index 3f9208b9a..9724b86d4 100644
--- a/firebase-common/api/android/firebase-common.api
+++ b/firebase-common/api/android/firebase-common.api
@@ -2,25 +2,14 @@ public abstract interface class dev/gitlive/firebase/DecodeSettings : dev/gitliv
 }
 
 public abstract interface class dev/gitlive/firebase/DecodeSettings$Builder {
-	public abstract fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public abstract fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
-	public abstract fun setPolymorphicStructure (Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;)V
 	public abstract fun setSerializersModule (Lkotlinx/serialization/modules/SerializersModule;)V
 }
 
 public abstract interface class dev/gitlive/firebase/EncodeDecodeSettings {
-	public abstract fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public abstract fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
 }
 
-public final class dev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure : java/lang/Enum {
-	public static final field LIST Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
-	public static final field MAP Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
-	public static fun getEntries ()Lkotlin/enums/EnumEntries;
-	public static fun valueOf (Ljava/lang/String;)Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
-	public static fun values ()[Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
-}
-
 public abstract interface class dev/gitlive/firebase/EncodeDecodeSettingsBuilder : dev/gitlive/firebase/DecodeSettings$Builder, dev/gitlive/firebase/EncodeSettings$Builder {
 }
 
@@ -30,10 +19,8 @@ public abstract interface class dev/gitlive/firebase/EncodeSettings : dev/gitliv
 
 public abstract interface class dev/gitlive/firebase/EncodeSettings$Builder {
 	public abstract fun getEncodeDefaults ()Z
-	public abstract fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public abstract fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
 	public abstract fun setEncodeDefaults (Z)V
-	public abstract fun setPolymorphicStructure (Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;)V
 	public abstract fun setSerializersModule (Lkotlinx/serialization/modules/SerializersModule;)V
 }
 
diff --git a/firebase-common/api/jvm/firebase-common.api b/firebase-common/api/jvm/firebase-common.api
index 3f9208b9a..9724b86d4 100644
--- a/firebase-common/api/jvm/firebase-common.api
+++ b/firebase-common/api/jvm/firebase-common.api
@@ -2,25 +2,14 @@ public abstract interface class dev/gitlive/firebase/DecodeSettings : dev/gitliv
 }
 
 public abstract interface class dev/gitlive/firebase/DecodeSettings$Builder {
-	public abstract fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public abstract fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
-	public abstract fun setPolymorphicStructure (Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;)V
 	public abstract fun setSerializersModule (Lkotlinx/serialization/modules/SerializersModule;)V
 }
 
 public abstract interface class dev/gitlive/firebase/EncodeDecodeSettings {
-	public abstract fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public abstract fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
 }
 
-public final class dev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure : java/lang/Enum {
-	public static final field LIST Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
-	public static final field MAP Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
-	public static fun getEntries ()Lkotlin/enums/EnumEntries;
-	public static fun valueOf (Ljava/lang/String;)Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
-	public static fun values ()[Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
-}
-
 public abstract interface class dev/gitlive/firebase/EncodeDecodeSettingsBuilder : dev/gitlive/firebase/DecodeSettings$Builder, dev/gitlive/firebase/EncodeSettings$Builder {
 }
 
@@ -30,10 +19,8 @@ public abstract interface class dev/gitlive/firebase/EncodeSettings : dev/gitliv
 
 public abstract interface class dev/gitlive/firebase/EncodeSettings$Builder {
 	public abstract fun getEncodeDefaults ()Z
-	public abstract fun getPolymorphicStructure ()Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;
 	public abstract fun getSerializersModule ()Lkotlinx/serialization/modules/SerializersModule;
 	public abstract fun setEncodeDefaults (Z)V
-	public abstract fun setPolymorphicStructure (Ldev/gitlive/firebase/EncodeDecodeSettings$PolymorphicStructure;)V
 	public abstract fun setSerializersModule (Lkotlinx/serialization/modules/SerializersModule;)V
 }