Returns botAsMember when `Group.get(bot.id)`

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/contact/GroupImpl.kt

@@ -242,15 +242,21 @@ internal class GroupImpl(
 
 
     override operator fun get(id: Long): Member {
+        if (id == bot.id) {
+            return botAsMember
+        }
         return members.firstOrNull { it.id == id }
             ?: throw NoSuchElementException("member $id not found in group $uin")
     }
 
     override fun contains(id: Long): Boolean {
-        return members.firstOrNull { it.id == id } != null
+        return bot.id == id || members.firstOrNull { it.id == id } != null
     }
 
     override fun getOrNull(id: Long): Member? {
+        if (id == bot.id) {
+            return botAsMember
+        }
         return members.firstOrNull { it.id == id }
     }
 

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/Group.kt

@@ -97,16 +97,19 @@ expect abstract class Group() : Contact, CoroutineScope {
 
     /**
      * 获取群成员实例. 不存在时抛出 [kotlin.NoSuchElementException]
+     * 当 [id] 为 [Bot.id] 时返回 [botAsMember]
      */
     abstract operator fun get(id: Long): Member
 
     /**
      * 获取群成员实例, 不存在则 null
+     * 当 [id] 为 [Bot.id] 时返回 [botAsMember]
      */
     abstract fun getOrNull(id: Long): Member?
 
     /**
      * 检查此 id 的群成员是否存在
+     * 当 [id] 为 [Bot.id] 时返回 `true`
      */
     abstract operator fun contains(id: Long): Boolean
 

mirai-core/src/jvmMain/kotlin/net/mamoe/mirai/contact/Group.kt

@@ -96,17 +96,20 @@ actual abstract class Group : Contact(), CoroutineScope {
 
     /**
      * 获取群成员实例. 不存在时抛出 [kotlin.NoSuchElementException]
+     * 当 [id] 为 [Bot.id] 时返回 [botAsMember]
      */
     actual abstract operator fun get(id: Long): Member
 
     /**
      * 获取群成员实例, 不存在则 null
+     * 当 [id] 为 [Bot.id] 时返回 [botAsMember]
      */
     actual abstract fun getOrNull(id: Long): Member?
 
 
     /**
      * 检查此 id 的群成员是否存在
+     * 当 [id] 为 [Bot.id] 时返回 `true`
      */
     actual abstract operator fun contains(id: Long): Boolean