Weird stuff in hashmap

Hello,

I'm trying to iterate over my hashmap like this:

(first populate the map in Java):

HashMap<String,String> foo = new HashMap<String,String>();
foo.put("hey","you");
foo.put("one","two");
root.put("stuff", foo); // map passed to template.process()

Now access it in ftl:

			<#list stuff?keys as key>
				<h3>${key}</h3>
			</#list>

I get stuff like this in my output:

put
remove
entrySet
hashCode
productElement
clear
isEmpty
hey
values
empty
underlying
productElements
copy
getClass
get
copy$default$1
equals
productPrefix
class
canEqual
keySet
size
one
containsKey
productArity
containsValue
productIterator
toString
putAll

What's all this crap?  My "hey" and "one" are there--and work fine if I
access them like ${stuff["hey"]}

But I want to iterate over all my keys and don't want all this other stuff,
which looks like introspected stuff from HashMap.

Any ideas appreciated.  Thanks!
Greg
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