Confused about RA pool settings

[standalone@localhost:9999 /] /subsystem=resource-adapters/resource-adapter=xmpp-ra.rar:read-resource
{
   "outcome" => "success",
   "result" => {
       "archive" => "xmpp-ra.rar",
       "background-validation" => undefined,
       "background-validation-millis" => undefined,
       "blocking-timeout-wait-millis" => undefined,
       "config-properties" => {"host" => "talk.google.om"},
       "connection-definitions" => [{
           "class-name" => "com.ramphastos.xmpp.XmppConnectionFactory",
           "jndi-name" => "xmpp",
           "pool-name" => "xmpp-ra_rar-Pool",
           "min-pool-size" => 10,
           "max-pool-size" => 100
       }],
       "flush-strategy" => undefined,
       "idle-timeout-minutes" => undefined,
       "max-pool-size" => undefined,
       "min-pool-size" => undefined,
       "pool-prefill" => undefined,
       "pool-use-strict-min" => undefined,
       "transaction-support" => "NoTransaction"
   }
}