Serializing List of Specific Objects

[haja gecko]

Hi, I'm trying to deserialize the following parameter file: 

The structure of the file is repetitive and I would like List<SystemParameter> 

parameter: refresh-token
category: System Parameter
defaultValue: 1
cache: false
envs:
  - env: local
    value: 1
  - env: dev
    value: 1
  - env: prod
    value: 1
parameter: token2
category: System Parameter
defaultValue: 1
cache: false
envs:
  - env: local
    value: 1
  - env: dev
    value: 1
  - env: prod
    value: 1

Here is my POJO:

public class SystemParameter {
   private String parameter;
   private String category;
   private String defaultValue;
   private String cache;
   private List<EnvironmentValue> envs;
   ...
}

Here is my main: 

public class SystemParameterReader {
   public static void main (String[] args) throws Exception  {
      String systemParameterFile = "systemParameter.yaml";
      URL configUrl = ClassLoader.getSystemResource (systemParameterFile);
      String fileName = configUrl.getFile();
      YamlReader yamlReader = new YamlReader (new FileReader (fileName));
      SystemParameter all = yamlReader.read(SystemParameter.class, List.class);

      //for(Object sys : all) {
         //SystemParameter s = (SystemParameter) sys;
         System.out.println (all);
      //}
   }
}

As I mention above, I would like the YamlReader.read (...) to return me a List<SystemParameter>, 
in this case, 2 items in the list, 1) refresh-token, 2) token2.

I've tried 
1)
   SystemParameter all = yamlReader.read(SystemParameter.class, List.class);
But this only returns the last SystemParameter token2, and not a list of SystemParameter as I had expected

2)
   List all = yamlReader.read(List.class, SystemParameter.class);
errors with Line 1, column 10: Unable to find property 'parameter' on class: java.util.List

Not sure how to do what I want. I'm using 1.11, and assuming it can do what I'm asking it to do.

Any help ...