Can't find instructions for inline comments for hclwrite

Greetings,

Would not be surprised if this is me, but I am unable to figure out how to add an inline comment using the hclwrite. For example, I have the following code;
```
f := hclwrite.NewEmptyFile()
rootBody := f.Body()
rootBody.SetAttributeValue("name", cty.StringVal(config.Name))
rootBody.AppendNewline()
rootBody.SetAttributeValue("mode", cty.StringVal("router"))
rootBody.AppendNewline()
log.Printf("%s", f.Bytes())
```

Which will give me the following output;
```
name = "gagent.example.org"

mode = "router"
```

What I am trying to do is add a comment so the actual output would be something like the following;
```
name = "gagent.example.org"

/*
* There are three modes of operation;
* client == Clients read a local agent file and send it to a router
* router == Routers route agent files to workers for operation
* worker == Workers process agent files
*/
mode = "router"
```

Again, I would not be surprised if I am just missing something simple, but any help would be appreciated it.

The issue provides a Go example using hclwrite.NewEmptyFile and Body methods, but names no repository file or test. Start by checking the hclwrite API and existing documentation for comment support; done means documenting how to produce the requested block comment output, or clearly stating whether that output is supported.

Written by the indexing model from the issue text.