Enum value used to report which encoding is being used for the content profile send at the channel start phase.
Check vortex_channel_new_full documentation to know more about how this enum is used.
By default, while sending profile content data, no encoding is used and EncodingNone must be used to report this fact. BEEP definition allows to encode the profile content using Base64. On this case, you have to use EncodingBase64.