code: def t_fold_end(self, t):
          r'\n+\ *'
          column = find_column(t)
          indent = self.indent_stack[-1]
          if column < indent:
              rollback_lexpos(t)
          if column <= indent:
              t.lexer.pop_state()
              t.type = 'B_FOLD_END'
          if column > indent:
              t.type = 'SCALAR'
          return f t_fold_end(self, t):
          r'\n+\ *'
          column = find_column(t)
          indent = self.indent_stack[-1]
          if column < indent:
              rollback_lexpos(t)
          if column <= indent:
              t.lexer.pop_state()
              t.type = 'B_FOLD_END'
          if column > indent:
              t.type = 'SCALAR'
          return t
docs: r'\n+\ *