gistfile1.java

public class CanonicalDataModel {
  public List<ObjectDefinition> objects; 
}

public class ObjectDefinition {
  public String name;
  public String id;
  public List<ObjectField> fields;
  public List<ObjectDefinition> associations;
  public boolean attachmentType;
}

public class ObjectField {
  public String name;
  public String type;
}

class CDMService {
  
  public CanonicalDataModel loadModel();
  
  public CDMService() {
  }
}