Default response image. Specifies the image or catalog entry to be used in case an image file cannot be found and defaultImage= is not specified in the request.
May be either a catalog entry (including a template) or a relative (to
attribute::RootPath) or absolute image file path. Useful for substituting missing images with default images.
Text string. If specified, must be either a valid
catalog::Id value in this image catalog or a relative (to
attribute::RootPath) or absolute path to an image file accessible by the Image Server.
Foreign image sources are not covered by the default image mechanism; an error is returned if a foreign image source is not valid.
default::DefaultImage if not defined. If defined but empty, default image behavior is disabled, even if
default::DefaultImage is defined.