public EntityIdentifier getPrincipal() {
        return this.principal;
    }
<p>
The principal associated with this template-linked policy. Verified Permissions substitutes this principal for
the <code>?principal</code> placeholder in the policy template when it evaluates an authorization request.
</p>

@return The principal associated with this template-linked policy. Verified Permissions substitutes this
        principal for the <code>?principal</code> placeholder in the policy template when it evaluates an
        authorization request.
aws-java-sdk-verifiedpermissions/src/main/java/com/amazonaws/services/verifiedpermissions/model/TemplateLinkedPolicyDefinitionItem.java