UUID
UUID.bytes
UUID.bytes_le
UUID.clock_seq
UUID.clock_seq_hi_variant
UUID.clock_seq_low
UUID.fields
UUID.hex
UUID.int
UUID.is_safe
UUID.node
UUID.time
UUID.time_hi_version
UUID.time_low
UUID.time_mid
UUID.urn
UUID.variant
UUID.version
randstr_16()
uuid4()
picoid