PHASE iOS xcode13.0 beta4

#PHASE.framework https://github.com/xamarin/xamarin-macios/pull/12098

diff -ruN /Applications/Xcode_13.0.0-beta3.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEEngine.h /Applications/Xcode_13.0.0-beta4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEEngine.h
--- /Applications/Xcode_13.0.0-beta3.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEEngine.h	2021-07-13 00:42:34.000000000 -0400
+++ /Applications/Xcode_13.0.0-beta4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEEngine.h	2021-07-22 14:34:16.000000000 -0400
@@ -101,7 +101,7 @@
     @property defaultMedium
     @abstract The default medium in the engine.
     @discussion
-        The default value is PHASEMediumPresetDefault.
+        The default value is PHASEMediumPresetAir.
 */
 @property(nonatomic, strong) PHASEMedium* defaultMedium;
 
diff -ruN /Applications/Xcode_13.0.0-beta3.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEMaterial.h /Applications/Xcode_13.0.0-beta4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEMaterial.h
--- /Applications/Xcode_13.0.0-beta3.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEMaterial.h	2021-07-13 00:42:34.000000000 -0400
+++ /Applications/Xcode_13.0.0-beta4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEMaterial.h	2021-07-22 14:23:25.000000000 -0400
@@ -21,12 +21,10 @@
     @abstract Material preset
 */
 typedef NS_ENUM(NSInteger, PHASEMaterialPreset) {
-    PHASEMaterialPresetDefault = 'mDef',
     PHASEMaterialPresetCardboard = 'mCrd',
     PHASEMaterialPresetGlass = 'mGls',
-    PHASEMaterialPresetBrickwork = 'mBrk',
+    PHASEMaterialPresetBrick = 'mBrk',
     PHASEMaterialPresetConcrete = 'mCcr',
-    PHASEMaterialPresetGypsumBoard = 'mGyp',
     PHASEMaterialPresetDrywall = 'mDrw',
     PHASEMaterialPresetWood = 'mWud',
 };
diff -ruN /Applications/Xcode_13.0.0-beta3.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEMedium.h /Applications/Xcode_13.0.0-beta4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEMedium.h
--- /Applications/Xcode_13.0.0-beta3.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEMedium.h	2021-07-13 00:42:35.000000000 -0400
+++ /Applications/Xcode_13.0.0-beta4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEMedium.h	2021-07-22 14:23:26.000000000 -0400
@@ -19,8 +19,7 @@
     @abstract Medium preset
 */
 typedef NS_ENUM(NSInteger, PHASEMediumPreset) {
-    PHASEMediumPresetDefault = 'mdDf',
-    PHASEMediumPresetRoomAir = 'mdRA',
+    PHASEMediumPresetAir = 'mdAr',
 }
 NS_SWIFT_NAME(PHASEMedium.Preset);
 
diff -ruN /Applications/Xcode_13.0.0-beta3.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEObject.h /Applications/Xcode_13.0.0-beta4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEObject.h
--- /Applications/Xcode_13.0.0-beta3.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEObject.h	2021-07-13 00:42:34.000000000 -0400
+++ /Applications/Xcode_13.0.0-beta4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PHASE.framework/Headers/PHASEObject.h	2021-07-22 14:23:25.000000000 -0400
@@ -50,8 +50,7 @@
     @method removeChild:
     @abstract Remove a child from this object.
 */
-- (void)removeChild:(PHASEObject*)child
-NS_SWIFT_NAME(removeChild(child:));
+- (void)removeChild:(PHASEObject*)child;
 
 /*!
     @method removeChildren