> + }
> + };
> +
> + FN2 = new Function<String, String>() {
> +
> + @Override
> + public String apply(String element) {
> + return "";
> + }
> + };
> + }
> +
> + @SuppressWarnings("unchecked")
> + @Override
> + public <R extends HttpRequest> R bindToRequest(R request, Object input) {
> + checkArgument(checkNotNull(input, "input") instanceof Map<?,?>, "this
> binder is only valid for Maps!");
Remove one of the checks, since `null instanceof X == false`:
```
checkArgument(input instanceof Map<?,?>, "input must be a non-null
java.util.Map");
```
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