I think I understand what they're asking for. Consider a function that takes in a struct as one of the arguments.[0]

Currently, you would have to invoke it like so:

    svc.GetObjectWithContext(ctx, &s3.GetObjectInput{Bucket: bucket, Key: key})

But... why do you have to type "s3.GetObjectInput"? The function is taking in a concrete type (not an interface) for that argument, and there is only one possible type that you can pass in... so I agree with the person above that it should be possible to elide the type like so:

    svc.GetObjectWithContext(ctx, &{Bucket: bucket, Key: key})

Go already supports type elision in some places, such as...

    []someStruct{{Field: value}, {Field: value}}

instead of having to type

    []someStruct{someStruct{Field: value}, someStruct{Field: value}}

which would be equally pointless repetition.

[0]: https://docs.aws.amazon.com/sdk-for-go/api/service/s3/#S3.Ge...