PEM client cert + key for the upstream TLS hop. Set only by clientCert(); the
library's reverse proxy presents it to the backend on every request, so the TLS
connection itself (mutual TLS → e.g. AS ABAP verify_client + CERTRULE) authenticates
the user. Requires connection.selfSigned (the proxy does the mutual-TLS hop).
PEM client cert + key for the upstream TLS hop. Set only by
clientCert(); the library's reverse proxy presents it to the backend on every request, so the TLS connection itself (mutual TLS → e.g. AS ABAPverify_client+ CERTRULE) authenticates the user. Requiresconnection.selfSigned(the proxy does the mutual-TLS hop).