Method clear

github-actions/browserstack/set-browserstack-env.js:12294–12298

()

        }
      }
      function appendHeader(headers, name, value) {
        value = headerValueNormalize(value);
        if (!isValidHeaderName(name)) {
          throw webidl.errors.invalidArgument({
            prefix: "Headers.append",
            value: name,
            type: "header name"
          });