Returns the Content-Type for this serialization format.returnThe Content-Type for this serialization format.
Serializes a GData entry to the provided {@link OutputStream}, using the specified serialization format.see#FORMAT_FULLsee#FORMAT_CREATEsee#FORMAT_UPDATEparamout The {@link OutputStream} to which the entry should be serialized.paramformat The format of the serialized output.throwsIOException Thrown if there is an issue writing the serialized entry to the provided {@link OutputStream}.throwsParseException Thrown if the entry cannot be serialized.