Function ssb_validate::message_value::message_value_common_checks

pub fn message_value_common_checks(
    message_value: &SsbMessageValue, 
    previous_value: Option<&SsbMessageValue>, 
    message_bytes: &[u8], 
    previous_key: Option<&Multihash>, 
    check_previous: bool
) -> Result<()>

Validation checks which are common across all contexts. The check_previous argument is used to control checks for the optional previous_value and previous_key parameters.