in lib/generators/aws_record/generated_attribute.rb [21:32]
def parse(field_definition)
name, type, opts = field_definition.split(':')
type = "string" if not type
type, opts = "string", type if OPTS.any? { |opt| type.include? opt }
opts = opts.split(',') if opts
type, opts = parse_type_and_options(name, type, opts)
validate_opt_combs(name, type, opts)
new(name, type, opts)
end