The field is added once for every port.
+## v28, implemented by >= 4.0
+
+New value for encoding format type in format_info
+PA_COMMAND_CREATE_(PLAYBACK|RECORDING)_STREAM and its reply,
+In reply from PA_COMMAND_GET_(SOURCE|SOURCE_OUTPUT|SINK|SINK_INPUT)_INFO[_LIST],
+SUBCOMMAND_SAVE_FORMATS, in reply from SUBCOMMAND_READ_FORMATS[_ALL]
+
+ (uint8_t ) PA_ENCODING_MPEG2_AAC_IEC61937 := 6
+
+## v29, implemented by >= 5.0
+#
+New field in all commands that send/receive profile introspection data
+(PA_COMMAND_GET_CARD_INFO)
+
+ uint32 available
+
+The field is added once for every profile.
+
#### If you just changed the protocol, read this
## module-tunnel depends on the sink/source/sink-input/source-input protocol
## internals, so if you changed these, you might have broken module-tunnel.