code: def parse(self, path, args=None, unsaved_files=None, options = 0):
          
          return TranslationUnit.from_source(path, args, unsaved_files, options,
                                             self)
docs: Load the translation unit from the given source code file by running
          clang and generating the AST before loading. Additional command line
          parameters can be passed to clang via the args parameter.
  
          In-memory contents for files can be provided by passing a list of pairs
          to as unsaved_files, the first item should be the filenames to be mapped
          and the second should be the contents to be substituted for the
          file. The contents may be passed as strings or file objects.
  
          If an error was encountered during parsing, a TranslationUnitLoadError
          will be raised.