}
		t.Logf("Waiting for the inner handler of the request: %q to complete", firstRequestTimesOutPath)
		select {
		case firstRequestInnerHandlerWriteErr := <-firstReqHandlerErrCh:
			if firstRequestInnerHandlerWriteErr != http.ErrHandlerTimeout {
				t.Fatalf("Expected error: %#v, but got: %s", http.ErrHandlerTimeout, fmtError(firstRequestInnerHandlerWriteErr))
			}

	if err := t1.Execute(&b, "javascript:alert(1)"); err == nil {
		t.Fatal("expected error executing t1")
	} else if gotError := err.Error(); gotError != wantError {
		t.Fatalf("got t1 execution error:\n\t%s\nwant:\n\t%s", gotError, wantError)
	}
	b.Reset()
	if err := t2.Execute(&b, nil); err != nil {
		t.Fatalf("error executing t2: %s", err)
	}
	const want = "bar"

      if not compose_dec:
        # skip a non-composition function
        if optional:
          return (None, None)
        else:
          raise KeyError('OpDef does not exist: ' + f_name)
      elif len(compose_dec) > 1:
        raise KeyError('More than one TF ops decomposes for.')
      else:
        op_name = compose_dec[0].args[0].value

    op_def = op_def_registry.get(op_name)
    if not op_def:

	cancel context.CancelCauseFunc

	mu  sync.Mutex // guards err
	err error      // first setError value for mapRoundTripError to consider
}

func (tr *transportRequest) extraHeaders() Header {
	if tr.extra == nil {
		tr.extra = make(Header)
	}
	return tr.extra
}

func (tr *transportRequest) setError(err error) {
	tr.mu.Lock()
	if tr.err == nil {
		tr.err = err
	}
	tr.mu.Unlock()
}

				child.AddASN1(cryptobyte_asn1.SEQUENCE, func(child *cryptobyte.Builder) {
					child.AddASN1(cryptobyte_asn1.OBJECT_IDENTIFIER, func(child *cryptobyte.Builder) {
						if len(v.der) == 0 {
							child.SetError(errors.New("invalid policy object identifier"))
							return
						}
						child.AddBytes(v.der)
					})
				})
			}
		} else {
			for _, v := range policyIdentifiers {

		}
		fmt.Fprint(fgo2, "\t")
		if !void {
			fmt.Fprint(fgo2, "r := ")
		}
		fmt.Fprintf(fgo2, "%s(%s)\n", cname, strings.Join(paramnames, ", "))

		if n.AddError {
			fmt.Fprint(fgo2, "\te := syscall.GetErrno()\n")
			fmt.Fprint(fgo2, "\tif e != 0 {\n")
			fmt.Fprint(fgo2, "\t\treturn ")
			if !void {
				fmt.Fprint(fgo2, "r, ")
			}
			fmt.Fprint(fgo2, "e\n")
			fmt.Fprint(fgo2, "\t}\n")