wp-includes/class-wp-comment.php:357Determines whether a non-public property is set.
$namestringbool public function __isset( $name ) { if ( in_array( $name, $this->post_fields, true ) && 0 !== (int) $this->comment_post_ID ) { $post = get_post( $this->comment_post_ID ); return property_exists( $post, $name ); } }Introduced in 4.4.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-comment.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.