public static OutputFrame forFrame(Frame frame) {
        final OutputType outputType = OutputType.forStreamType(frame.getStreamType());
        if (outputType == null) {
            return null;
        }
        return new OutputFrame(outputType, frame.getPayload());
    }
Holds exactly one complete line of container output. Lines are split on newline characters (LF, CR LF).
core/src/main/java/org/testcontainers/containers/output/OutputFrame.java