Add @JvmStatic for performance reasons.

See https://github.com/airbnb/MvRx/wiki/Advanced-Concepts#mvrxviewmodel

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/action/MessageActionsViewModel.kt

@@ -102,6 +102,7 @@ class MessageActionsViewModel @AssistedInject constructor(@Assisted
 
         val quickEmojis = listOf("👍", "👎", "😄", "🎉", "😕", "❤️", "🚀", "👀")
 
+        @JvmStatic
         override fun create(viewModelContext: ViewModelContext, state: MessageActionState): MessageActionsViewModel? {
             val fragment: MessageActionsBottomSheet = (viewModelContext as FragmentViewModelContext).fragment()
             return fragment.messageActionViewModelFactory.create(state)

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/edithistory/ViewEditHistoryViewModel.kt

@@ -61,6 +61,7 @@ class ViewEditHistoryViewModel @AssistedInject constructor(@Assisted
 
     companion object : MvRxViewModelFactory<ViewEditHistoryViewModel, ViewEditHistoryViewState> {
 
+        @JvmStatic
         override fun create(viewModelContext: ViewModelContext, state: ViewEditHistoryViewState): ViewEditHistoryViewModel? {
             val fragment: ViewEditHistoryBottomSheet = (viewModelContext as FragmentViewModelContext).fragment()
             return fragment.viewEditHistoryViewModelFactory.create(state)

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/reactions/ViewReactionsViewModel.kt

@@ -68,6 +68,7 @@ class ViewReactionsViewModel @AssistedInject constructor(@Assisted
 
     companion object : MvRxViewModelFactory<ViewReactionsViewModel, DisplayReactionsViewState> {
 
+        @JvmStatic
         override fun create(viewModelContext: ViewModelContext, state: DisplayReactionsViewState): ViewReactionsViewModel? {
             val fragment: ViewReactionsBottomSheet = (viewModelContext as FragmentViewModelContext).fragment()
             return fragment.viewReactionsViewModelFactory.create(state)

vector/src/main/java/im/vector/riotx/features/home/room/list/actions/RoomListQuickActionsViewModel.kt

@@ -37,6 +37,7 @@ class RoomListQuickActionsViewModel @AssistedInject constructor(@Assisted initia
 
     companion object : MvRxViewModelFactory<RoomListQuickActionsViewModel, RoomListQuickActionsState> {
 
+        @JvmStatic
         override fun create(viewModelContext: ViewModelContext, state: RoomListQuickActionsState): RoomListQuickActionsViewModel? {
             val fragment: RoomListQuickActionsBottomSheet = (viewModelContext as FragmentViewModelContext).fragment()
             return fragment.roomListActionsViewModelFactory.create(state)

vector/src/main/java/im/vector/riotx/features/reactions/EmojiSearchResultViewModel.kt

@@ -42,6 +42,7 @@ class EmojiSearchResultViewModel @AssistedInject constructor(
 
     companion object : MvRxViewModelFactory<EmojiSearchResultViewModel, EmojiSearchResultViewState> {
 
+        @JvmStatic
         override fun create(viewModelContext: ViewModelContext, state: EmojiSearchResultViewState): EmojiSearchResultViewModel? {
             val activity: EmojiReactionPickerActivity = (viewModelContext as ActivityViewModelContext).activity()
             return activity.emojiSearchResultViewModelFactory.create(state)

vector/src/main/java/im/vector/riotx/features/settings/push/PushGatewaysViewModel.kt

@@ -40,6 +40,7 @@ class PushGatewaysViewModel @AssistedInject constructor(@Assisted initialState:
 
     companion object : MvRxViewModelFactory<PushGatewaysViewModel, PushGatewayViewState> {
 
+        @JvmStatic
         override fun create(viewModelContext: ViewModelContext, state: PushGatewayViewState): PushGatewaysViewModel? {
             val fragment: PushGatewaysFragment = (viewModelContext as FragmentViewModelContext).fragment()
             return fragment.pushGatewaysViewModelFactory.create(state)