Create embedded ActiveEffect documents on a document.
Parameters
doc: any
The document to create the effects on (an Item or Actor).
effectsData: object[]
Plain ActiveEffect creation data.
Returns Promise<any[]>
The created effect documents, or an empty array.
Remarks
The Foundry-free way for the logic layer to attach an Active Effect —
e.g. a treatment Course Bonus on an affliction (#1183). The caller passes the
owning document and plain effect-creation data; this boundary performs the
write. No-op when the document cannot host effects.
Create embedded
ActiveEffectdocuments on a document.