code: static SymbolTable newSharedSymbolTable(IonStruct ionRep)
      {
          IonReader reader = new IonReaderTreeSystem(ionRep);
          return newSharedSymbolTable(reader, false);
      }
docs: Constructs a new shared symbol table represented by the passed in
  {@link IonStruct}.
  
  @param ionRep
  the {@link IonStruct} representing the new shared symbol table
  @return