Include By Nodes is one of the source-code metrics Understand computes across 17+ languages — browse them in the GUI, export and track them, or script them with the Python API.
Include By Nodes
API ID: IncludeByNodesLanguages: Any
Targets: Files
Number of unique nodes in the included-by tree (not including self).
Counts all unique files that include this file, directly or indirectly.