code: def represent_scalar(self, tag, value, style=None):
      if style is None:
          style = self.default_style
      node = ScalarNode(tag, value, style=style)
      if self.alias_key is not None:
          self.represented_objects[self.alias_key] = node
      return node
  
imports: from .error import *
  from .nodes import *
  import datetime, copyreg, types, base64, collections
label_desc: Use image node_id 6 for calling the BaseRepresenter obj's underlying member method code with example usage: obj.represent_scalar(tag, value, style) and returns: node