wp-admin/includes/class-wp-screen.php:737Gets a screen reader text string.
$keystring?string public function get_screen_reader_text( $key ) { if ( ! isset( $this->_screen_reader_content[ $key ] ) ) { return null; } return $this->_screen_reader_content[ $key ]; }Introduced in 4.4.0. One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
string to ?string.verified against sourcesrc/wp-admin/includes/class-wp-screen.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.