"conversation-uri" => ["type" => "varbinary(255)", "not null" => "1", "default" => "", "comment" => "GNU Social conversation URI"],
"conversation-href" => ["type" => "varbinary(255)", "not null" => "1", "default" => "", "comment" => "GNU Social conversation link"],
"protocol" => ["type" => "tinyint unsigned", "not null" => "1", "default" => "255", "comment" => "The protocol of the item"],
"conversation-uri" => ["type" => "varbinary(255)", "not null" => "1", "default" => "", "comment" => "GNU Social conversation URI"],
"conversation-href" => ["type" => "varbinary(255)", "not null" => "1", "default" => "", "comment" => "GNU Social conversation link"],
"protocol" => ["type" => "tinyint unsigned", "not null" => "1", "default" => "255", "comment" => "The protocol of the item"],