getOverlays(filter?) 
getOverlays get overlay information.
Reference 
typescript
(
  filter?: {
    id?: string
    name?: string
    groupId?: string
    paneId?: string
  }
) => Overlay[]Parameters 
- filterFilter conditions.- idOverlay id.
- nameOverlay name.
- groupIdGroup id.
- paneIdPane id.
 
Returns 
getOverlays returns Overlay[] .