List the messages in the current conversation. Note that the plugin context will only have access to messages that have loaded for the user. For different reasons, some messages within a conversation will not have loaded for a user, meaning that this function will return undefined for those messages. If you need to definitively load all messages for a conversation, use the Core API.
This function is only available on context of type singleConversation and messageComposer
function listMessages(paginationToken?: string, cancelToken?: CancelToken): Promise<PaginatedResults<Message>>
This error applies to composer plugins. It occurs when the messageComposer context for composer plugins does not have access to the conversation. To avoid this error, disable the functionality of this method whenever the conversation property does not exist in the messageComposer context. Learn more in the Context topic.