BUG: also need to resolve parameters in GetParameterByIndex()

Modules/Wrappers/ApplicationEngine/include/otbWrapperParameterGroup.h

@@ -66,7 +66,7 @@ public:
    * or the path to a choice value */
   void AddParameter(ParameterType type, std::string paramKey, std::string paramName);
 
-  Parameter::Pointer GetParameterByIndex(unsigned int i);
+  Parameter::Pointer GetParameterByIndex(unsigned int i, bool follow=true);
 
   Parameter::Pointer GetParameterByKey(std::string name, bool follow=true);
 

Modules/Wrappers/ApplicationEngine/src/otbWrapperParameterGroup.cxx

@@ -732,9 +732,14 @@ ParameterGroup::SetParameter(Parameter::Pointer p, std::string &key)
 }
 
 Parameter::Pointer
-ParameterGroup::GetParameterByIndex(unsigned int i)
+ParameterGroup::GetParameterByIndex(unsigned int i, bool follow)
 {
-  return m_ParameterList[i];
+  Parameter *param = m_ParameterList[i];
+  if (follow)
+    {
+    param = this->ResolveParameter(param);
+    }
+  return Parameter::Pointer(param);
 }
 
 Parameter::Pointer