Response media object for media content card.
This message has
oneof_ fields (mutually exclusive fields).
For each oneof, at most one member field can be set at the same time.
Setting any member of the oneof automatically clears all other
Required. Name of media card.
Optional. Description of media card.
Optional. Image to display above media content. This field is a member of `oneof`_ ``image``.
Optional. Icon to display above media content. This field is a member of `oneof`_ ``image``.
Required. Url where the media is stored.