[wp_ajax_nopriv_acf/fields/gallery/get_attachment]
WP_Hook Object
(
    [callbacks] => Array
        (
            [10] => Array
                (
                    [000000006b09e977000000006def02f1ajax_get_attachment] => Array
                        (
                            [function] => Array
                                (
                                    [0] => acf_field_gallery Object
                                        (
                                            [name] => gallery
                                            [title] => 
                                            [category] => content
                                            [defaults] => Array
                                                (
                                                    [preview_size] => thumbnail
                                                    [library] => all
                                                    [min] => 0
                                                    [max] => 0
                                                    [min_width] => 0
                                                    [min_height] => 0
                                                    [min_size] => 0
                                                    [max_width] => 0
                                                    [max_height] => 0
                                                    [max_size] => 0
                                                    [mime_types] => 
                                                )

                                            [l10n] => Array
                                                (
                                                    [select] => Add Image to Gallery
                                                    [edit] => Edit Image
                                                    [update] => Update Image
                                                    [uploadedTo] => Uploaded to this post
                                                    [max] => Maximum selection reached
                                                )

                                            [label] => Gallery
                                        )

                                    [1] => ajax_get_attachment
                                )

                            [accepted_args] => 1
                        )

                )

        )

    [iterations:WP_Hook:private] => Array
        (
        )

    [current_priority:WP_Hook:private] => Array
        (
        )

    [nesting_level:WP_Hook:private] => 0
    [doing_action:WP_Hook:private] => 
)