Location of sdk jitsi files

I need change this this file where i can achieve this:
org.jitsi.impl.neomedia.jmfext.media.protocol.mediarecorder.DataSource.getCamera(MediaLocator
locator):869

also i need to change some language files…

but where is located these files?

i am using in gradle

allprojects {
repositories {
google()
jcenter()
maven {
url “https://github.com/jitsi/jitsi-maven-repository/raw/master/releases
}
}
}

and
implementation (‘org.jitsi.react:jitsi-meet-sdk:2.+’) { transitive = true }