DYaml

[Vino]

Hi All,

   I am trying to use D-YAML for one of my project, and just tired 
the example for this link 
https://dlang-community.github.io/D-YAML/tutorials/getting_started.html, the example is working fine, so i would like to know who to i validate the node, eg

Example Code
```
import std.stdio;
import std.algorithm;
import dyaml;


alias isReserverd = among!("name", "type");

int main(string[] args)
{
	
    string path = "input.yml";
     try
     {
        auto loader = Loader.fromFile(path);
        auto root = loader.load();
        if(root[*].isReserverd)     // This is condition
         {
             writeln(root[*]);
             return 0;
         }
     }
     catch(YAMLException e)
     {
         writeln(e.msg);
     }

     writeln("FAILURE");
     return 1;
}
```

input.yml
```
name: Test
type: A
records: 10
```
Required output
```
Test
A
```

From,
Vino.B