public String getLastAuthenticatedRegion() {
        return this.lastAuthenticatedRegion;
    }
<p>
The Region from which the authenticated entity (user or role) last attempted to access the service. Amazon Web
Services does not report unauthenticated requests.
</p>
<p>
This field is null if no IAM entities attempted to access the service within the <a href=
"https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_access-advisor.html#service-last-accessed-reporting-period"
>tracking period</a>.
</p>

@return The Region from which the authenticated entity (user or role) last attempted to access the service.
        Amazon Web Services does not report unauthenticated requests.</p>
        <p>
        This field is null if no IAM entities attempted to access the service within the <a href=
        "https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_access-advisor.html#service-last-accessed-reporting-period"
        >tracking period</a>.
aws-java-sdk-iam/src/main/java/com/amazonaws/services/identitymanagement/model/ServiceLastAccessed.java