code: static <T extends FunctionMeta> Map<T, IDataModel> toMetaFunctions(InputStream book, Class<T> metaClass) {
          return toMetaFunctions(ConverterUtils.newWorkbook(book), metaClass);    
      }
docs: Invokes {@link #toMetaFunctions(Workbook, Class)} with {@link InputStream} converted to {@link Workbook}.