<svg width="10cm" height="3cm" viewBox="0 0 100 30" version="1.1">
     <desc>Example Use02-GeneratedContent - 'use' on a 'symbol'</desc>
     <rect x=".1" y=".1" width="99.8" height="29.8" fill="none" stroke="blue" stroke-width=".2"/>
     <g transform="translate(45, 10)">
          <svg width="10" height="10" viewBox="0 0 20 20">
               <rect x="1" y="1" width="8" height="8"/>
               <rect x="11" y="1" width="8" height="8"/>
               <rect x="1" y="11" width="8" height="8"/>
               <rect x="11" y="11" width="8" height="8"/>
          </svg>
     </g>
</svg>
Original SVG source