get http://gooru.org/api/nucleus/v2/course-map//units//lessons/
NOTE:
ctx_collection_id = {assessmentId} by this information you can find the target resource is tied to which assessment.
“content_subformat” possible values in response
video_resource,
webpage_resource,
interactive_resource,
image_resource,
text_resource,
audio_resource.
This is useful for FE to figure out the icons to be displayed for a given resource in UI.