gnTesting
0
WP_Hook Object
(
    [callbacks] => Array
        (
            [10] => Array
                (
                    [lambda_53] => Array
                        (
                            [function] => lambda_53
                            [accepted_args] => 1
                        )

                )

            [100] => Array
                (
                    [comment_whitelist__pre_comment_approved] => Array
                        (
                            [function] => comment_whitelist__pre_comment_approved
                            [accepted_args] => 2
                        )

                )

        )

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

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

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