What ES6 concept does the next line describe, please?
export default Form.create()(AbMemo);
Especially this: We instantiated Form.create() then again, in another parenthesis we pass component name?
Just in case, AbMemo Code.
const AbMemo = React.memo(({form, ...props}) => {
  const formChange = (e) => {
  };
  const {getFieldDecorator} = form;
    return (
      <div className="App" onChange={formChange}>
          <Form.Item className="firstName">
            {getFieldDecorator("firstName", {
              rules:[
                {required: true}
              ]
            })(<Input placeholder="FirstName" />)}
          </Form.Item>
          <Form.Item>
            <Button htmlType="submit" onClick={props.handleSubmit}>Submit</Button>
          </Form.Item>
      </div>)
    });
export default AbMemo;
