#[Item]
Attribute on parameters.
Marks a parameter of render() that receives the current item of a repeater (Repeater) the block is in: a post
(a post class of the theme or plugin, or WP_Post), a term (WP_Term), a comment (WP_Comment), a user
(WP_User) or a row of a table of the theme or plugin (its row class). The type of the parameter says which, and
it is nullable: outside an item of that kind, the value is null.
The value comes from the block context the repeater sets – postId, termId, commentId, userId or
{namespace}/{table} –, which the block uses without usesContext. WordPress also sets postId for the post being
shown, so outside a repeater a post parameter is that post, as for core/post-title; a post class gets only posts
of its own type.