Function if

packages/react-dom/src/__tests__/ReactLegacyCompositeComponent-test.js:712–723

(this.props.flipped)

      render() {
        if (this.props.flipped) {
          return (
            <div>
              <Static ref={this.static0Ref} key="B">
                B (ignored)
              </Static>
              <Static ref={this.static1Ref} key="A">
                A (ignored)
              </Static>
            </div>
          );
        } else {
          return (
            <div>
              <Static ref={this.static0Ref} key="A">