OptionalaboveTrue, if the link preview must be shown above the message text; otherwise, the link preview will be shown below the message text
OptionaldisabledTrue, if the link preview is disabled
OptionallargeTrue, if the media in the link preview is suppposed to be enlarged; ignored if the URL isn't explicitly specified or media size change isn't supported for the preview
OptionalsmallTrue, if the media in the link preview is suppposed to be shrunk; ignored if the URL isn't explicitly specified or media size change isn't supported for the preview
OptionalurlURL to use for the link preview. If empty, then the first URL found in the message text will be used
Data about the options used for link preview generation