t() :: %ExGram.Model.ChatPermissions{
  can_add_web_page_previews: boolean() | nil,
  can_change_info: boolean() | nil,
  can_invite_users: boolean() | nil,
  can_pin_messages: boolean() | nil,
  can_send_media_messages: boolean() | nil,
  can_send_messages: boolean() | nil,
  can_send_other_messages: boolean() | nil,
  can_send_polls: boolean() | nil
}