21
headerName string,
22
fetchToken func(context.Context) (string, error),
24
>
return &TokenCredentials{
25
>
headerName: headerName,
26
>
fetchToken: fetchToken,
27
>
}
28
>
}
29
30
func (c *TokenCredentials) GetRequestMetadata(ctx context.Context, _ ...string) (map[string]string, error) {