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learndash_course_progress
Array
(
    [percentage] => 0
    [completed] => 0
    [total] => 16
)

learndash_get_course_steps
Array
(
    [0] => 1612614
    [1] => 1612612
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    [3] => 1612608
    [4] => 1612606
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)

$activity

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

$topics
Array
(
    [0] => WP_Post Object
        (
            [ID] => 1612610
            [post_author] => 3
            [post_date] => 2019-11-04 13:47:24
            [post_date_gmt] => 2019-11-04 18:47:24
            [post_content] => 
            [post_title] => ii-V-I-V7 of II Progression with Enclosures
            [post_excerpt] => 
            [post_status] => publish
            [comment_status] => closed
            [ping_status] => closed
            [post_password] => 
            [post_name] => ii-v-i-v7-of-ii-progression-with-enclosures
            [to_ping] => 
            [pinged] => 
            [post_modified] => 2019-11-04 13:47:24
            [post_modified_gmt] => 2019-11-04 18:47:24
            [post_content_filtered] => 
            [post_parent] => 0
            [guid] => https://jazzpianolessons.com/topic/ii-v-i-v7-of-ii-progression-with-enclosures/
            [menu_order] => 1
            [post_type] => sfwd-topic
            [post_mime_type] => 
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            [filter] => raw
        )

)