Within the Controller Service Configuration section, there is the Properties subsection. The keys and values in this section are the property names and values for the service. For example the StandardSSLContextService would have a section like this:

Properties:
  Keystore Filename: /tmp/localhost/keystore.jks
  Keystore Password: keystorePassword
  Keystore Type: JKS
  SSL Protocol: TLS
  Truststore Filename: /tmp/truststore.jks
  Truststore Password: truststorePassword
  Truststore Type: JKS
  key-password: keyPassword