code: def get_field_mapping(self):
          
          fields = {}
          values = {}
          for tab in self.tabs:
              parameter_values = tab.get_parameter_value()
              fields.update(parameter_values['fields'])
              values.update(parameter_values['values'])
          return {
              'fields': fields,
              'values': values
          }
docs: Obtain metadata from current state of the widget.
  
          :returns: Dictionary of values by type in this format:
              {'fields': {}, 'values': {}}.
          :rtype: dict