content: import React from 'react';
  import IconButton from '@material-ui/core/IconButton';
  import Icon from '@material-ui/core/Icon';
  
  const WrappedIcon = props => <Icon {...props} />;
  WrappedIcon.muiName = 'Icon';
  
  export default function Composition() {
    return (
      <div>
        <IconButton>
          <Icon>alarm</Icon>
        </IconButton>
        <IconButton>
          <WrappedIcon>alarm</WrappedIcon>
        </IconButton>
      </div>
    );
  }
  