Protected ReadonlyenvProtected ReadonlymodelProtectedlayersShared layers of every file first, then the target sections: how ConfigLoader.forTarget merges.
ProtectednotStaticlookupProtected StaticoverlapsOne path is a prefix of the other: the variable sets the key, a part of it, or an object around it.
Staticparsecell.server.port, items[0].name and items.0.name all work.
Looks up one key of the merged application configuration of a target and says where it came from: which cell*.yml files set it (shared or target section) and which environment variables.