/*!
@page contactcenterinsights-override-authentication How to Override the Authentication Credentials

Unless otherwise configured, the client libraries use
[Application Default Credentials] to authenticate with Google Cloud Services.
While this works for most applications, in some cases you may need to override
this default. You can do so by providing the
[UnifiedCredentialsOption](@ref google::cloud::UnifiedCredentialsOption)
The following example shows how to explicitly load a service account key file:

<!-- inject-service-account-snippet-start -->
@snippet contact_center_insights_client_samples.cc with-service-account

<!-- inject-service-account-snippet-end -->

Keep in mind that we chose this as an example because it is relatively easy to
understand. Consult the [Best practices for managing service account keys]
guide for more details.

@see @ref guac - for more information on the factory functions to create
`google::cloud::Credentials` objects.

[Best practices for managing service account keys]: https://cloud.google.com/iam/docs/best-practices-for-managing-service-account-keys
[Application Default Credentials]: https://cloud.google.com/docs/authentication#adc

*/

// <!-- inject-authentication-pages-start -->

/*! @page contactcenterinsights_v1::ContactCenterInsightsClient-service-account-snippet Override contactcenterinsights_v1::ContactCenterInsightsClient Authentication Defaults

@snippet google/cloud/contactcenterinsights/v1/samples/contact_center_insights_client_samples.cc with-service-account

*/
// <!-- inject-authentication-pages-end -->
