Returns the scheme used to store the "phase 2" client certificate.
If the returned scheme is nm_setting_802_1x_ck_scheme_blob, use get_client_cert_blob; if nm_setting_802_1x_ck_scheme_path, use get_client_cert_path ; if nm_setting_802_1x_ck_scheme_pkcs11, use get_client_cert_uri.
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the Setting8021x |
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scheme used to store the "phase 2" client certificate (blob or path) |