assetParameters

Ad parameters for the assets played in this session — targeting, custom params, anything the ad server keys on.

Vendor-neutral by name; for GAM these become IMA's adTagParameters. Merged on top of each asset's own assetParameters from the break manifest, per key, so overriding one key does not discard the rest of what the break author authored. OptiViewAds.updateAssetParameters overrides both.