public static String apiUnknownToken(int token) {
        return apiUnknownToken("Unknown", token);
    }
Parses a version string. The version string must have the format
{@code PREFIX MAJOR.MINOR.REVISION IMPL}, where {@code PREFIX} is the
specified prefix (string, optional), {@code MAJOR} is the major version
(integer), {@code MINOR} is the minor version (integer), {@code REVISION}
is the revision version (string, optional) and {@code IMPL} is
implementation-specific information (string, optional).

@param version the version string
@param prefix the version string prefix, may be null

@return the parsed {@link APIVersion}
jme3-lwjgl3/src/main/java/com/jme3/lwjgl3/utils/APIUtil.java