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Just having a go with Go and trying to figure it out.
When creating a CustomComponent, I want to provide a list of strings to it as an input. Constructed this from some examples:
```type RepositoryArgs struct {
  Environments pulumi.StringArrayInput `pulumi:"environments"`
}```
How do I iterate over `pulumi.StringArrayInput`? Like so?
```args.Environments.ToStringArrayOutput().ApplyT(func(environments []string) error { 
...
}```
Should it be this or just `[]string` ? What's the meaning of `pulumi:"environments"` here?


Also, what's the meaning of this snippet? <https://github.com/pulumi/examples/blob/master/aws-go-s3-folder-component/s3folder.go#L82-L90>
Sorry. docs on this are really lean and there's not much in the examples either.

&gt; How do I iterate over pulumi.StringArrayInput?
yes you have to use an `ApplyT` right now

&gt; What's the meaning of pulumi:"environments" here?
I believe that's the schema model, if you're creating a multi language package it's needed, if it's just a plain pulumi component it's not

&gt; Also, what's the meaning of this snippet?
Arguments are things you pass to the your component, no idea what's happening in the snippet, looks out of date