* In order to get a field or a field list, the user needs to pass a
* scope as argument, this scope can be a top-level scope or a scope
* relative to an arbitrary field. This function provides the mapping
* In order to get a field or a field list, the user needs to pass a
* scope as argument, this scope can be a top-level scope or a scope
* relative to an arbitrary field. This function provides the mapping