public static String customScopeCollectionToString(@NonNull Collection<String> scopes) {
        return TextUtils.join(" ", scopes).toLowerCase();
    }
public static String customScopeCollectionToString(@NonNull Collection<String> scopes) {
        return TextUtils.join(" ", scopes).toLowerCase();
    }
public static String customScopeCollectionToString ( @ NonNull Collection < String > scopes ) { return TextUtils . join ( " " , scopes ) . toLowerCase ( ) ; }
Converts a {@link Collection} of {@link String}s into a space-delimited {@link String}.

@param scopes the {@link Collection} of {@link String}s to convert
@return a space-delimited {@link String} of {@link Scope}s
Converts a { @link Collection } of { @link String } s into a space - delimited { @link String } .