Simple usage of the `BEMComponent` class looks like this:

```jsx static
import BEMComponent from '@core/utils/BEM'

const bem_root = 'SomeElement';

export default class SomeElement extends BEMComponent {
  constructor(props) {
    super(props, bem_root);
  }

  static propTypes = {
    ...BEMComponent.propTypes,
    /* other prop types */
  }

  render() {
    return <div
      {...props} 
      bem={this.bem(this.props.bem)}
      />
  }
}
```