pub fn immediate_parent(clip: &Clip) -> Option<(String, EdgeType)>Expand description
The clip’s primary parent id and the edge that links them.
Applies the same precedence as edge_type, then reads the parent pointer
appropriate to that operation, falling through per-op candidates in order.
Every id is normalised (a leading m_ stripped, an empty or all-zero
sentinel treated as absent). Returns None for a root or when no usable
parent id is present.