get_phase2_ca_cert_uri

Returns the "phase 2" CA certificate URI analogously to get_phase2_ca_cert_blob and get_phase2_ca_cert_path.

Currently, it's limited to PKCS#<!-- -->11 URIs ('pkcs11' scheme as defined by RFC 7512), but may be extended to other schemes in future (such as 'file' URIs for local files and 'data' URIs for inline certificate data).

Parameters:

this	the Setting8021x

Returns:

the URI string