public void setPrincipal(java.util.Map<String, String> principal) {
        this.principal = principal;
    }
<p>
The external principal that has access to a resource within the zone of trust.
</p>

@param principal
       The external principal that has access to a resource within the zone of trust.
aws-java-sdk-accessanalyzer/src/main/java/com/amazonaws/services/accessanalyzer/model/AccessPreviewFinding.java