Represents a UUID.

.. php:method:: compareTo($other)

    :param Ramsey\\Uuid\\UuidInterface $other: The UUID to compare
    :returns: Returns ``-1``, ``0``, or ``1`` if the UUID is less than, equal to, or greater than the other UUID.
    :returntype: ``int``

.. php:method:: equals($other)

    :param object|null $other: An object to test for equality with this UUID.
    :returns: Returns true if the UUID is equal to the provided object.
    :returntype: ``bool``

.. php:method:: getBytes()

    :returns: A binary string representation of the UUID.
    :returntype: ``string``

.. php:method:: getFields()

    :returns: The fields that comprise this UUID.
    :returntype: Ramsey\\Uuid\\Fields\\FieldsInterface

.. php:method:: getHex()

    :returns: The hexadecimal representation of the UUID.
    :returntype: Ramsey\\Uuid\\Type\\Hexadecimal

.. php:method:: getInteger()

    :returns: The integer representation of the UUID.
    :returntype: Ramsey\\Uuid\\Type\\Integer

.. php:method:: getUrn()

    :returns: The string standard representation of the UUID as a `URN`_.
    :returntype: ``string``

.. php:method:: toString()

    :returns: The string standard representation of the UUID.
    :returntype: ``string``

.. php:method:: __toString()

    :returns: The string standard representation of the UUID.
    :returntype: ``string``