The docs say
For example, \'facebook.com\', or \'google.com\'.
However, is the exhaustive list available somewhere and can I dep
you can use this method to identify the Type of Provider :
private String checkType(String s) {
String type;
switch (s) {
case "password":
type = "EmailAuthProviderID";
break;
case "phone":
type = "PhoneAuthProviderID";
break;
case "google.com":
type = "GoogleAuthProviderID";
break;
case "facebook.com":
type = "FacebookAuthProviderID";
break;
case "twitter.com":
type = "TwitterAuthProviderID";
break;
case "github.com":
type = "GitHubAuthProviderID";
break;
}
}