code: def clear_numeric_score_increment(self):
          
          # Implemented from template for osid.grading.GradeSystemForm.clear_lowest_numeric_score
          if (self.get_numeric_score_increment_metadata().is_read_only() or
                  self.get_numeric_score_increment_metadata().is_required()):
              raise errors.NoAccess()
          self._my_map['numericScoreIncrement'] = self._numeric_score_increment_default
docs: Clears the numeric score increment.
  
          raise:  NoAccess - ``Metadata.isRequired()`` or
                  ``Metadata.isReadOnly()`` is ``true``
          *compliance: mandatory -- This method must be implemented.*