public static function get_event_attendees( $post_id, $args = [] ) {
			$attendees = [];

			/**
			 * Filter to skip all empty $post_ID otherwise will fallback to the current global post ID
			 *
			 * @since 4.9
			 * @since 4.10.6 Added $args parameter.
			 *
			 * @param bool  $skip_empty_post If the empty post should be skipped or not
			 * @param int   $post_id         ID of the post being affected
			 * @param array $args            List of arguments to filter by.
			 */
			$skip_empty_post = apply_filters( 'tribe_tickets_event_attendees_skip_empty_post', true, $post_id, $args );

			/**
			 * Process an attendee only if:
			 *
			 * - $skip_empty_post is true and $post_id is not empty => ( true && false ) => ! false => true
			 * - $skip_empty_post is false and $post_id is empty => ( false && true ) => ! false => true
			 * - $skip_empty_post is false and $post_id is not empty => ( false && false ) => ! false => true
			 *
			 * Is not executed if:
			 *
			 * - $skip_empty_post is true and $post_id is empty => ( true && true ) => ! true => false
			 */
			if ( ! ( $skip_empty_post && empty( $post_id ) ) ) {
				/**
				 * Filters the cache expiration when this function is called from an admin screen.
				 *
				 * Returning a falsy value here will force a fetch each time.
				 *
				 * @since 4.7
				 * @since 4.10.6 Added $args parameter.
				 *
				 * @param int   $admin_expire The cache expiration in seconds; defaults to 2 minutes.
				 * @param int   $post_id      The ID of the post attendees are being fetched for.
				 * @param array $args         List of arguments to filter by.
				 */
				$admin_expire = apply_filters( 'tribe_tickets_attendees_admin_expire', 120, $post_id, $args );

				/**
				 * Filters the cache expiration when this function is called from a non admin screen.
				 *
				 * Returning a falsy value here will force a refetch each time.
				 *
				 * @since 4.7
				 * @since 4.10.6 Added $args parameter.
				 *
				 * @param int   $admin_expire The cache expiration in seconds, defaults to an hour.
				 * @param int   $post_id      The ID of the post attendees are being fetched for.
				 * @param array $args         List of arguments to filter by.
				 */
				$expire = apply_filters( 'tribe_tickets_attendees_expire', HOUR_IN_SECONDS, $post_id, $args );

				$expire = is_admin() ? (int) $admin_expire : (int) $expire;

				$attendees_from_cache = false;

				$post_transient = null;

				$cache_key = false;

				if ( empty( $args ) && 0 < $post_id ) {
					$cache_key = (int) $post_id;
				}

				if ( 0 !== $expire && $cache_key ) {
					/** @var Tribe__Post_Transient $post_transient */
					$post_transient = tribe( 'post-transient' );

					$attendees_from_cache = $post_transient->get( $cache_key, self::ATTENDEES_CACHE );

					// if there is a valid transient, we'll use the value from that and note
					// that we have fetched from cache
					if ( false !== $attendees_from_cache ) {
						$attendees            = empty( $attendees_from_cache ) ? [] : $attendees_from_cache;
						$attendees_from_cache = true;
					}
				}

				// if we haven't grabbed attendees from cache, then attempt to fetch attendees
				if ( false === $attendees_from_cache && empty( $attendees ) ) {
					$attendee_data = self::get_event_attendees_by_args( $post_id, $args );

					if ( ! empty( $attendee_data['attendees'] ) ) {
						$attendees = $attendee_data['attendees'];
					}

					if ( 0 !== $expire && $cache_key ) {
						$post_transient->set( $cache_key, self::ATTENDEES_CACHE, $attendees, $expire );
					}
				}
			}

			/**
			 * Filters the return data for event attendees.
			 *
			 * @since 4.4
			 * @since 4.10.6 Added $args parameter.
			 *
			 * @param array $attendees Array of event attendees.
			 * @param int   $post_id   Event post ID.
			 * @param array $args      List of arguments to filter by.
			 */
			return apply_filters( 'tribe_tickets_event_attendees', $attendees, $post_id, $args );
		}