DBKV.delete_by_key_range

You're seeing just the function delete_by_key_range, go back to DBKV module for more information.
Link to this function

delete_by_key_range(table_name, min_key, max_key, opts \\ [])

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Specs

delete_by_key_range(atom(), any(), any(), list()) :: integer() | {:error, any()}