code: function send(conversationId, message, data, fileName, fileType, fileContent) {
    const form = new FormData()
    form.append('message', message)
    if (data != null) {
      form.append('data', data)
    }
  
    if (fileName != null) {
      form.append('attachment', fileContent, {
        filename: fileName,
        contentType: fileType,
        knownLength: fileContent.length,
      })
    }
  
    return agentRequest(
      'post',
      `/agent/v4/stream/${conversationId}/message/create`,
      'MessagesClient/sendMessage',
      form
    )
  }
docs: /* Generic function to send/forward messages from MessagesClient interface