  }
    if (dataDelta == 0x20) {
      &#47;&#47; Starts with a non-normalized &quot;data&quot; scheme containing upper-case
      &#47;&#47; letters. Parse anyway, but throw away the scheme.
      return _parse(uri.substring(5), 0, null);
    }
  }
  throw FormatException(&quot;Does not start with &#39;data:&#39;&quot;, uri, 0);
}</code></pre>
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