How to handle a lost KeyStore password in Android?

If you have a situation where either you have forgotten a Keystore password or change of developers and the password wasn't sent across.... what to do?  However, your app lives on and needs to be updated!

Possible solutions

grade.properties

This is a great starting point.  Have a look in your android/gradle.properties file.  Unfortunately, the android/ directory didn't exist and I had to run the command prompt to generate.  So no password!

signingConfigs {
    release {
        // These must be set or Gradle will complain (even if they are overridden).
        keyAlias = ""
        keyPassword = ""
        storeFile = null
        storePassword = ""
    }
}

But as you can see, this file didn't exist so contains a null value.

When searching for the password, the term is 

storePassword

Otherwise, try

keyPassword

Didn't find your password?

Well, I didn't find the password.  So the next step for me was to go to the 'Lost or compromised upload key?' page (https://support.google.com/googleplay/android-developer/answer/9842756?hl=en).