code: function ClassBody(node, print) {
    this.push("{");
    if (node.body.length === 0) {
      print.printInnerComments();
      this.push("}");
    } else {
      this.newline();
  
      this.indent();
      print.sequence(node.body);
      this.dedent();
  
      this.rightBrace();
    }
  }
docs: Print ClassBody, collapses empty blocks, prints body.