def METHOD_NAME(self):
    """
    Test the default FormatMetadata.
    """
    # FormatMetadata can not be constructed, it has to be retrieved.
    # MatrixTransform has a FormatMetadata.
    mat = OCIO.MatrixTransform()
    fmd = mat.getFormatMetadata()
    # Default name is ROOT and has no value.
    self.assertEqual(fmd.getElementName(), 'ROOT')
    self.assertEqual(fmd.getElementValue(), '')
    # No attributes.
    self.assertEqual(len(list(fmd)), 0)
    # No children.
    children = fmd.getChildElements()
    self.assertEqual(len(list(children)), 0)