[Credentials Binding Plugin] How to specify the domain in withCredentials?

[Yuri Govorushchenko]

Hello,

I put credentials with same ids into different domains and thus need a way to specify the domain name on invoking `withCredentials` step in my script pipeline. Is it possible?
As a workaround currently I have to find the creds manually, but this approach lacks the password masking provided by the plugin:

```

def fetchCred(String domainName, String id) {
    def credentialsStore = Jenkins.instance.getExtensionList('com.cloudbees.plugins.credentials.SystemCredentialsProvider')[0].getStore()
    def domain = new Domain(domainName, null, null)
    def creds = credentialsStore.getCredentials(domain)
    def cred = creds.find { it.id == id }
    assert (cred != null)
    cred
}

```

Thanks.