ignored. Assuming it is well-formatted, all other contents of <code>file</code> are
ignored.</p>
<p>NB: This function calls <a href="dart-io/File/readAsBytesSync.html">File.readAsBytesSync</a>, and will block on file IO.
Prefer using <a href="dart-io/SecurityContext/setTrustedCertificatesBytes.html">setTrustedCertificatesBytes</a>.</p>
<p>iOS note: On iOS, this call takes only the bytes for a single DER
encoded X509 certificate. It may be called multiple times to add
multiple trusted certificates to the con