DictionaryHandle :: LookupString - Lookup enumeration string by code
The function returns the name for an enumerated value identified by code.
Return value:  Enumerator name ( NString & )
The enumerator name is the string value (name) for an enumerator in an enumeration. Enumerator names must not exceed 40 characters.
Implementation details
NString &
DictionaryHandle  :: LookupString ( NString &scoped_name, int32 enum_val, NString &nstring )
- scoped_name
 - Scoped type or property name
my_namespace::Person 
- enum_val
 - Enumerator value
The enumerator value is the code (value) of an enumerator as being defined in an enumeration. CS_U is a reserved value indication an invalid enumerator value. 
- nstring - String object

