diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/model/Membership.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/model/Membership.kt
index 4d35d3b4dd..93eb54fbd3 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/model/Membership.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/model/Membership.kt
@@ -49,7 +49,4 @@ enum class Membership(val value: String) {
             return listOf(INVITE, JOIN)
         }
     }
-
 }
-
-
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/helper/TimelineEventEntityHelper.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/helper/TimelineEventEntityHelper.kt
index c5e2aef910..51775f9e9d 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/helper/TimelineEventEntityHelper.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/helper/TimelineEventEntityHelper.kt
@@ -18,7 +18,6 @@ package im.vector.matrix.android.internal.database.helper
 
 import im.vector.matrix.android.api.session.events.model.EventType
 import im.vector.matrix.android.api.session.events.model.toModel
-import im.vector.matrix.android.api.session.room.model.RoomMember
 import im.vector.matrix.android.api.session.room.model.RoomMemberContent
 import im.vector.matrix.android.internal.database.mapper.ContentMapper
 import im.vector.matrix.android.internal.database.model.*
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/query/RoomMemberEntityQueries.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/query/RoomMemberEntityQueries.kt
index 3eb1da87a1..2ddade0048 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/query/RoomMemberEntityQueries.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/query/RoomMemberEntityQueries.kt
@@ -18,8 +18,6 @@ package im.vector.matrix.android.internal.database.query
 
 import im.vector.matrix.android.internal.database.model.RoomMemberEntity
 import im.vector.matrix.android.internal.database.model.RoomMemberEntityFields
-import im.vector.matrix.android.internal.database.model.UserEntity
-import im.vector.matrix.android.internal.database.model.UserEntityFields
 import io.realm.Realm
 import io.realm.RealmQuery
 import io.realm.kotlin.where
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/RoomAvatarResolver.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/RoomAvatarResolver.kt
index acfb57bd46..0bb2dc0f27 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/RoomAvatarResolver.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/RoomAvatarResolver.kt
@@ -20,10 +20,8 @@ import com.zhuinden.monarchy.Monarchy
 import im.vector.matrix.android.api.session.events.model.EventType
 import im.vector.matrix.android.api.session.events.model.toModel
 import im.vector.matrix.android.api.session.room.model.RoomAvatarContent
-import im.vector.matrix.android.api.session.room.model.RoomMember
 import im.vector.matrix.android.internal.database.mapper.ContentMapper
 import im.vector.matrix.android.internal.database.model.EventEntity
-import im.vector.matrix.android.internal.database.model.EventEntityFields
 import im.vector.matrix.android.internal.database.model.RoomMemberEntityFields
 import im.vector.matrix.android.internal.database.query.prev
 import im.vector.matrix.android.internal.database.query.where
@@ -59,5 +57,4 @@ internal class RoomAvatarResolver @Inject constructor(private val monarchy: Mona
         }
         return res
     }
-
 }
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/LoadRoomMembersTask.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/LoadRoomMembersTask.kt
index 6affd120a8..64cbcb3527 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/LoadRoomMembersTask.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/LoadRoomMembersTask.kt
@@ -26,7 +26,6 @@ import im.vector.matrix.android.internal.network.executeRequest
 import im.vector.matrix.android.internal.session.room.RoomAPI
 import im.vector.matrix.android.internal.session.room.RoomSummaryUpdater
 import im.vector.matrix.android.internal.session.sync.SyncTokenStore
-import im.vector.matrix.android.internal.session.user.UserEntityFactory
 import im.vector.matrix.android.internal.task.Task
 import im.vector.matrix.android.internal.util.awaitTransaction
 import io.realm.Realm
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/RoomMemberEntityFactory.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/RoomMemberEntityFactory.kt
index 933431b77f..51df244401 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/RoomMemberEntityFactory.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/RoomMemberEntityFactory.kt
@@ -22,7 +22,7 @@ import im.vector.matrix.android.internal.database.model.RoomMemberEntity
 internal object RoomMemberEntityFactory {
 
     fun create(roomId: String, userId: String, roomMember: RoomMemberContent): RoomMemberEntity {
-        val primaryKey = "${roomId}_${userId}"
+        val primaryKey = "${roomId}_$userId"
         return RoomMemberEntity(
                 primaryKey = primaryKey,
                 userId = userId,
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/RoomMemberEventHandler.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/RoomMemberEventHandler.kt
index 73c4c8cdc1..16d6aacbc9 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/RoomMemberEventHandler.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/RoomMemberEventHandler.kt
@@ -20,7 +20,6 @@ import im.vector.matrix.android.api.session.events.model.Event
 import im.vector.matrix.android.api.session.events.model.EventType
 import im.vector.matrix.android.api.session.events.model.toModel
 import im.vector.matrix.android.api.session.room.model.Membership
-import im.vector.matrix.android.api.session.room.model.RoomMember
 import im.vector.matrix.android.api.session.room.model.RoomMemberContent
 import im.vector.matrix.android.internal.session.user.UserEntityFactory
 import io.realm.Realm
@@ -42,6 +41,4 @@ internal class RoomMemberEventHandler @Inject constructor() {
         }
         return true
     }
-
-
 }
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/RoomMembers.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/RoomMembers.kt
index ca397a0608..f2dd733978 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/RoomMembers.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/RoomMembers.kt
@@ -17,10 +17,7 @@
 package im.vector.matrix.android.internal.session.room.membership
 
 import im.vector.matrix.android.api.session.events.model.EventType
-import im.vector.matrix.android.api.session.events.model.toModel
 import im.vector.matrix.android.api.session.room.model.Membership
-import im.vector.matrix.android.api.session.room.model.RoomMember
-import im.vector.matrix.android.internal.database.mapper.asDomain
 import im.vector.matrix.android.internal.database.model.*
 import im.vector.matrix.android.internal.database.model.EventEntity
 import im.vector.matrix.android.internal.database.model.RoomMemberEntity
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/timeline/TokenChunkEventPersistor.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/timeline/TokenChunkEventPersistor.kt
index 3727d1f5b0..df52e9a33a 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/timeline/TokenChunkEventPersistor.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/timeline/TokenChunkEventPersistor.kt
@@ -28,8 +28,6 @@ import im.vector.matrix.android.internal.database.query.create
 import im.vector.matrix.android.internal.database.query.find
 import im.vector.matrix.android.internal.database.query.findAllIncludingEvents
 import im.vector.matrix.android.internal.database.query.where
-import im.vector.matrix.android.internal.session.room.membership.RoomMemberEventHandler
-import im.vector.matrix.android.internal.session.user.UserEntityFactory
 import im.vector.matrix.android.internal.util.awaitTransaction
 import io.realm.kotlin.createObject
 import timber.log.Timber
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/RoomSyncHandler.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/RoomSyncHandler.kt
index ea59cc1fd2..f4efa291b8 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/RoomSyncHandler.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/RoomSyncHandler.kt
@@ -37,7 +37,6 @@ import im.vector.matrix.android.internal.session.room.membership.RoomMemberEvent
 import im.vector.matrix.android.internal.session.room.read.FullyReadContent
 import im.vector.matrix.android.internal.session.room.timeline.PaginationDirection
 import im.vector.matrix.android.internal.session.sync.model.*
-import im.vector.matrix.android.internal.session.user.UserEntityFactory
 import io.realm.Realm
 import io.realm.kotlin.createObject
 import timber.log.Timber
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/UserAccountDataSyncHandler.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/UserAccountDataSyncHandler.kt
index 571c9b4c27..9bc8c86be5 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/UserAccountDataSyncHandler.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/UserAccountDataSyncHandler.kt
@@ -20,7 +20,6 @@ import com.zhuinden.monarchy.Monarchy
 import im.vector.matrix.android.api.pushrules.RuleScope
 import im.vector.matrix.android.api.pushrules.RuleSetKey
 import im.vector.matrix.android.api.session.events.model.toModel
-import im.vector.matrix.android.api.session.room.model.RoomMember
 import im.vector.matrix.android.api.session.room.model.RoomMemberContent
 import im.vector.matrix.android.internal.database.mapper.PushRulesMapper
 import im.vector.matrix.android.internal.database.mapper.asDomain
diff --git a/vector/src/main/java/im/vector/riotx/core/epoxy/VectorEpoxyModel.kt b/vector/src/main/java/im/vector/riotx/core/epoxy/VectorEpoxyModel.kt
index 667ccb1bd0..654e4c605a 100644
--- a/vector/src/main/java/im/vector/riotx/core/epoxy/VectorEpoxyModel.kt
+++ b/vector/src/main/java/im/vector/riotx/core/epoxy/VectorEpoxyModel.kt
@@ -18,14 +18,25 @@ package im.vector.riotx.core.epoxy
 
 import com.airbnb.epoxy.EpoxyModelWithHolder
 import com.airbnb.epoxy.VisibilityState
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancelChildren
 
 /**
  * EpoxyModelWithHolder which can listen to visibility state change
  */
 abstract class VectorEpoxyModel<H : VectorEpoxyHolder> : EpoxyModelWithHolder<H>() {
 
+    protected val coroutineScope = CoroutineScope(SupervisorJob() + Dispatchers.Main)
+
     private var onModelVisibilityStateChangedListener: OnVisibilityStateChangedListener? = null
 
+    override fun unbind(holder: H) {
+        coroutineScope.coroutineContext.cancelChildren()
+        super.unbind(holder)
+    }
+
     override fun onVisibilityStateChanged(visibilityState: Int, view: H) {
         onModelVisibilityStateChangedListener?.onVisibilityStateChanged(visibilityState)
         super.onVisibilityStateChanged(visibilityState, view)
diff --git a/vector/src/main/java/im/vector/riotx/core/epoxy/bottomsheet/BottomSheetMessagePreviewItem.kt b/vector/src/main/java/im/vector/riotx/core/epoxy/bottomsheet/BottomSheetMessagePreviewItem.kt
index 7b79ce8549..e5ffd5f350 100644
--- a/vector/src/main/java/im/vector/riotx/core/epoxy/bottomsheet/BottomSheetMessagePreviewItem.kt
+++ b/vector/src/main/java/im/vector/riotx/core/epoxy/bottomsheet/BottomSheetMessagePreviewItem.kt
@@ -51,7 +51,7 @@ abstract class BottomSheetMessagePreviewItem : VectorEpoxyModel<BottomSheetMessa
         holder.sender.setTextOrHide(matrixItem.displayName)
         holder.body.movementMethod = movementMethod
         holder.body.text = body
-        body.findPillsAndProcess { it.bind(holder.body) }
+        body.findPillsAndProcess(coroutineScope) { it.bind(holder.body) }
         holder.timestamp.setTextOrHide(time)
     }
 
diff --git a/vector/src/main/java/im/vector/riotx/features/home/AvatarRenderer.kt b/vector/src/main/java/im/vector/riotx/features/home/AvatarRenderer.kt
index b7c3e61ee4..c3d16f3299 100644
--- a/vector/src/main/java/im/vector/riotx/features/home/AvatarRenderer.kt
+++ b/vector/src/main/java/im/vector/riotx/features/home/AvatarRenderer.kt
@@ -71,6 +71,14 @@ class AvatarRenderer @Inject constructor(private val activeSessionHolder: Active
                 .into(target)
     }
 
+    @AnyThread
+    fun getCachedDrawable(glideRequest: GlideRequests, matrixItem: MatrixItem): Drawable {
+        return buildGlideRequest(glideRequest, matrixItem.avatarUrl)
+                .onlyRetrieveFromCache(true)
+                .submit()
+                .get()
+    }
+
     @AnyThread
     fun getPlaceholderDrawable(context: Context, matrixItem: MatrixItem): Drawable {
         val avatarColor = when (matrixItem) {
diff --git a/vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailFragment.kt b/vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailFragment.kt
index eff9df9d18..c0ae1ec252 100644
--- a/vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailFragment.kt
+++ b/vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailFragment.kt
@@ -68,7 +68,6 @@ import im.vector.matrix.android.api.session.room.send.SendState
 import im.vector.matrix.android.api.session.room.timeline.Timeline
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import im.vector.matrix.android.api.session.room.timeline.getLastMessageContent
-import im.vector.matrix.android.api.session.user.model.User
 import im.vector.matrix.android.api.util.MatrixItem
 import im.vector.matrix.android.api.util.toMatrixItem
 import im.vector.matrix.android.api.util.toRoomAliasMatrixItem
diff --git a/vector/src/main/java/im/vector/riotx/features/home/room/detail/composer/TextComposerViewModel.kt b/vector/src/main/java/im/vector/riotx/features/home/room/detail/composer/TextComposerViewModel.kt
index 25f92d4ae2..a2c9787bdf 100644
--- a/vector/src/main/java/im/vector/riotx/features/home/room/detail/composer/TextComposerViewModel.kt
+++ b/vector/src/main/java/im/vector/riotx/features/home/room/detail/composer/TextComposerViewModel.kt
@@ -28,7 +28,6 @@ import im.vector.matrix.android.api.session.group.model.GroupSummary
 import im.vector.matrix.android.api.session.room.model.Membership
 import im.vector.matrix.android.api.session.room.model.RoomMember
 import im.vector.matrix.android.api.session.room.model.RoomSummary
-import im.vector.matrix.android.api.session.user.model.User
 import im.vector.matrix.rx.rx
 import im.vector.riotx.core.platform.VectorViewModel
 import im.vector.riotx.features.home.room.detail.RoomDetailFragment
diff --git a/vector/src/main/java/im/vector/riotx/features/home/room/detail/composer/TextComposerViewState.kt b/vector/src/main/java/im/vector/riotx/features/home/room/detail/composer/TextComposerViewState.kt
index 0320818f67..f2a1f07c57 100644
--- a/vector/src/main/java/im/vector/riotx/features/home/room/detail/composer/TextComposerViewState.kt
+++ b/vector/src/main/java/im/vector/riotx/features/home/room/detail/composer/TextComposerViewState.kt
@@ -22,7 +22,6 @@ import com.airbnb.mvrx.Uninitialized
 import im.vector.matrix.android.api.session.group.model.GroupSummary
 import im.vector.matrix.android.api.session.room.model.RoomMember
 import im.vector.matrix.android.api.session.room.model.RoomSummary
-import im.vector.matrix.android.api.session.user.model.User
 import im.vector.riotx.features.home.room.detail.RoomDetailArgs
 
 data class TextComposerViewState(val roomId: String,
diff --git a/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/item/BaseEventItem.kt b/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/item/BaseEventItem.kt
index 02b7341c72..5db87fff0f 100644
--- a/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/item/BaseEventItem.kt
+++ b/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/item/BaseEventItem.kt
@@ -27,6 +27,7 @@ import im.vector.riotx.core.epoxy.VectorEpoxyModel
 import im.vector.riotx.core.platform.CheckableView
 import im.vector.riotx.core.ui.views.ReadReceiptsView
 import im.vector.riotx.core.utils.DimensionConverter
+import kotlinx.coroutines.*
 
 /**
  * Children must override getViewType()
diff --git a/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/item/MessageTextItem.kt b/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/item/MessageTextItem.kt
index 5ee0576be7..fabdf22d14 100644
--- a/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/item/MessageTextItem.kt
+++ b/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/item/MessageTextItem.kt
@@ -49,7 +49,7 @@ abstract class MessageTextItem : AbsMessageItem<MessageTextItem.Holder>() {
         holder.messageView.setOnClickListener(attributes.itemClickListener)
         holder.messageView.setOnLongClickListener(attributes.itemLongClickListener)
         if (searchForPills) {
-            message?.findPillsAndProcess { it.bind(holder.messageView) }
+            message?.findPillsAndProcess(coroutineScope) { it.bind(holder.messageView) }
         }
         val textFuture = PrecomputedTextCompat.getTextFuture(
                 message ?: "",
diff --git a/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/tools/EventRenderingTools.kt b/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/tools/EventRenderingTools.kt
index 492248985e..043763fd8e 100644
--- a/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/tools/EventRenderingTools.kt
+++ b/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/tools/EventRenderingTools.kt
@@ -25,14 +25,11 @@ import im.vector.riotx.core.linkify.VectorLinkify
 import im.vector.riotx.core.utils.isValidUrl
 import im.vector.riotx.features.home.room.detail.timeline.TimelineEventController
 import im.vector.riotx.features.html.PillImageSpan
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext
+import kotlinx.coroutines.*
 import me.saket.bettermovementmethod.BetterLinkMovementMethod
 
-fun CharSequence.findPillsAndProcess(processBlock: (PillImageSpan) -> Unit) {
-    GlobalScope.launch(Dispatchers.Main) {
+fun CharSequence.findPillsAndProcess(scope: CoroutineScope, processBlock: (PillImageSpan) -> Unit) {
+    scope.launch(Dispatchers.Main) {
         withContext(Dispatchers.IO) {
             toSpannable().let { spannable ->
                 spannable.getSpans(0, spannable.length, PillImageSpan::class.java)
diff --git a/vector/src/main/java/im/vector/riotx/features/html/PillImageSpan.kt b/vector/src/main/java/im/vector/riotx/features/html/PillImageSpan.kt
index a609541a62..3d3dcbea94 100644
--- a/vector/src/main/java/im/vector/riotx/features/html/PillImageSpan.kt
+++ b/vector/src/main/java/im/vector/riotx/features/html/PillImageSpan.kt
@@ -88,25 +88,27 @@ class PillImageSpan(private val glideRequests: GlideRequests,
     }
 
     internal fun updateAvatarDrawable(drawable: Drawable?) {
-        pillDrawable.apply {
-            chipIcon = drawable
-        }
-        tv?.get()?.apply {
-            invalidate()
-        }
+        pillDrawable.chipIcon = drawable
+        tv?.get()?.invalidate()
     }
 
     // Private methods *****************************************************************************
 
     private fun createChipDrawable(): ChipDrawable {
         val textPadding = context.resources.getDimension(R.dimen.pill_text_padding)
+        val icon = try {
+            avatarRenderer.getCachedDrawable(glideRequests, matrixItem)
+        } catch (exception: Exception) {
+            avatarRenderer.getPlaceholderDrawable(context, matrixItem)
+        }
+
         return ChipDrawable.createFromResource(context, R.xml.pill_view).apply {
             text = matrixItem.getBestName()
             textEndPadding = textPadding
             textStartPadding = textPadding
             setChipMinHeightResource(R.dimen.pill_min_height)
             setChipIconSizeResource(R.dimen.pill_avatar_size)
-            chipIcon = avatarRenderer.getPlaceholderDrawable(context, matrixItem)
+            chipIcon = icon
             setBounds(0, 0, intrinsicWidth, intrinsicHeight)
         }
     }
diff --git a/vector/src/main/java/im/vector/riotx/features/notifications/NotifiableEventResolver.kt b/vector/src/main/java/im/vector/riotx/features/notifications/NotifiableEventResolver.kt
index ef620a7df3..11d770adc4 100644
--- a/vector/src/main/java/im/vector/riotx/features/notifications/NotifiableEventResolver.kt
+++ b/vector/src/main/java/im/vector/riotx/features/notifications/NotifiableEventResolver.kt
@@ -23,7 +23,6 @@ import im.vector.matrix.android.api.session.events.model.Event
 import im.vector.matrix.android.api.session.events.model.EventType
 import im.vector.matrix.android.api.session.events.model.toModel
 import im.vector.matrix.android.api.session.room.model.Membership
-import im.vector.matrix.android.api.session.room.model.RoomMember
 import im.vector.matrix.android.api.session.room.model.RoomMemberContent
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import im.vector.matrix.android.api.session.room.timeline.getEditedEventId