class Sequel::SQL::Blob

most database engines require binary data to be escaped differently than regular strings.
stored as a blob type in the database. Sequel represents binary data as a Blob object because
Blob is used to represent binary data in the Ruby environment that is

def to_sequel_blob

levels.
Returns +self+, used so that Blobs don't get wrapped in multiple 
def to_sequel_blob
  self
end