Function parse_command_from_unsigned 

pub fn parse_command_from_unsigned(payload: &[u8]) -> Option<String>

Parse the command string from an unsigned player command packet.

The wire format is simply a VarInt-prefixed UTF-8 string (the command without the leading /). This is the first (and only meaningful) field.

Errors

Returns None if the data is too short to contain a valid string.