easysnowdata.providers.opentopography.collection_id# easysnowdata.providers.opentopography.collection_id(item_id: str) → str[source]# The collection an item belongs to: "COP30_hh" → "COP30". Item ids are the collection’s short name plus a product-level suffix (_hh surface, _be bare earth, _srtm, _global).