Method to get id

Signed-off-by: Fabio José <fabiojose@gmail.com>

lib/specs/spec_1.js

@@ -37,6 +37,33 @@ function Spec1(_caller) {
    * Used to inject compatibility methods or attributes
    */
   this.caller = _caller;
+
+  // dataschema attribute
+  this.caller.prototype.dataschema = function(dataschema){
+    this.spec.dataschema(dataschema);
+    return this;
+  }
+  this.caller.prototype.getDataschema = function() {
+    return this.spec.getDataschema();
+  }
+
+  // datacontenttype attribute
+  this.caller.prototype.dataContentType = function(contentType){
+    this.spec.dataContentType(contentType);
+    return this;
+  };
+  this.caller.prototype.getDataContentType = function(){
+   return this.spec.getDataContentType();
+  };
+
+  // subject attribute
+  this.caller.prototype.subject = function(_subject){
+    this.spec.subject(_subject);
+    return this;
+  };
+  this.caller.prototype.getSubject = function(){
+   return this.spec.getSubject();
+  };
 }
 
 Spec1.prototype.id = function(_id){
@@ -44,4 +71,8 @@ Spec1.prototype.id = function(_id){
   return this;
 };
 
+Spec1.prototype.getId => {
+  return this.payload["id"];
+}
+
 module.exports = Spec1;