Currently, Collection.InsertMany accepts a []interface for the list of documents to insert. However, that API often requires users to copy their existing slice of documents to a slice of type []interface, adding unnecessary repeated code and unnecessary data copies. Improve the API by changing the documents parameter type to interface and use reflection to require users to pass in a array type (i.e. array or slice).

This ticket was created based on a proposed improvement in a community PR.

Definition of done:

• Change the documents parameter in InsertMany to any instead of []any.
• Return an error if the value passed to the documents parameter is not a slice. That avoids ambiguity between inserting many documents and inserting a single document that is an array.
• Add an InsertMany benchmark and compare the performance before/after. Require that there is no significant performance impact.