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learndash_course_progress
Array
(
    [percentage] => 0
    [completed] => 0
    [total] => 14
)

learndash_get_course_steps
Array
(
    [0] => 1612629
    [1] => 1612627
    [2] => 1612625
    [3] => 1612623
    [4] => 1612621
    [5] => 1612619
    [6] => 1612617
)

$activity

$lesson_progress
Array
(
    [total] => 1
    [completed] => 0
    [percentage] => 0
)

$topics
Array
(
    [0] => WP_Post Object
        (
            [ID] => 1612617
            [post_author] => 3
            [post_date] => 2019-11-04 14:36:39
            [post_date_gmt] => 2019-11-04 19:36:39
            [post_content] => 
            [post_title] => Autumn Leaves Part 1 (Major Scale)
            [post_excerpt] => 
            [post_status] => publish
            [comment_status] => closed
            [ping_status] => closed
            [post_password] => 
            [post_name] => autumn-leaves-part-1-major-scale
            [to_ping] => 
            [pinged] => 
            [post_modified] => 2019-11-04 14:36:39
            [post_modified_gmt] => 2019-11-04 19:36:39
            [post_content_filtered] => 
            [post_parent] => 0
            [guid] => https://jazzpianolessons.com/topic/autumn-leaves-part-1-major-scale/
            [menu_order] => 1
            [post_type] => sfwd-topic
            [post_mime_type] => 
            [comment_count] => 0
            [filter] => raw
        )

)