wordpress - Run one specific action of an action function in PHP

Background:

in my WordPress theme I have the below action functions, which consolidate several hooks, e.g. several functions are consolidated into:

'single_job_listing_meta_start'

public static function template_tags() {
    add_action( 'single_job_listing_start', array( __CLASS__, 'single_job_listing_start' ), 10 );

    add_action( 'listify_single_job_listing_meta', array( __CLASS__, 'enqueue_scripts' ) );
    add_action( 'listify_single_job_listing_meta', array( __CLASS__, 'single_job_listing_meta' ) );

    add_action( 'single_job_listing_meta_start', array( __CLASS__, 'the_secondary_image' ), 7 );
    add_action( 'single_job_listing_meta_start', 'listify_the_listing_title', 10 );
    add_action( 'single_job_listing_meta_start', 'listify_the_listing_location', 20 );
    add_action( 'single_job_listing_meta_start', 'listify_the_listing_category', 30 );

    add_action( 'single_job_listing_meta_after', 'listify_the_listing_rating' );

    add_action( 'listify_single_job_listing_actions', array( __CLASS__, 'the_actions' ) );
    add_action( 'listify_single_job_listing_actions_after', array( __CLASS__, 'submit_review_link' ) );

    add_action( 'listify_single_job_listing_cover_end', array( __CLASS__, 'cover_gallery' ) );
}

Desired outcome

However, I actually need the more granular functions behind it, i.e.

array( __CLASS__, 'the_secondary_image' ) 
'listify_the_listing_title'
'listify_the_listing_location'
'listify_the_listing_category'
'listify_the_listing_rating'

Solution attempt

By trying I was able to execute the last 4 hooks of the above, simply via eg

<?php listify_the_listing_rating(); ?>

However, I have two questions:

1. given these are all hooked (consolidated) into 'single_job_listing_meta_start', is there a way to call this (consolidated) action and execute only a specific hook from it? If yes, how would be the code for example?

2. Whilst I was able to execute the above hook functions 2-5 via <?php listify_the_listing_rating(); ?>, how would I execute the first hook array( __CLASS__, 'the_secondary_image'? I tried <?php array( __CLASS__, 'the_secondary_image') ?> which didn't work.

Solution:

I was able to execute the secondary image code with the following:

Listify_WP_Job_Manager_Template_Single_Listing::the_secondary_image();

I believe it refers to the template file (first part of the code) and then the function (second part).