public Date getLastActive() {
        return lastActive;
    }
Returns the date and time that this connection was last used, or null if
this connection has never been used or this information is unavailable.

@return
    The date and time that this connection was last used, or null if this
    connection has never been used or this information is unavailable.
guacamole/src/main/java/org/apache/guacamole/rest/connection/APIConnection.java