docs: def fromtext(self, text, encoding='utf-8', mimetype='text/plain'):
          """ 
          set blob content from given text in StorageBlobModel instance. Parameters are:
          - text (required): path to a local file 
          - encoding (optional): text encoding (default is utf-8)
          - mimetype (optional): set a mimetype. azurestoragewrap will guess it if not given 
          """
          if isinstance(text, str):
              text = text.encode(encoding, 'ignore')
  
              # Load text into self.__content__
              self.content = bytes(text)
  
              self.properties.content_settings = ContentSettings(content_type=mimetype, content_encoding=encoding)
  
          else:
              raise AzureStorageWrapException(self, 'Can not load blob content, because given text is not from type string')