mojo/public/tools/mojom/version_compatibility_unittest.py
def testUnionFieldMinVersionChange(self):
    """Changing the MinVersion of a field breaks backward-compatibility."""
    self.assertNotBackwardCompatible(
        'union U { string a; [MinVersion=1] string b; };',
        'union U { string a; [MinVersion=2] string b; };')
Changing the MinVersion of a field breaks backward-compatibility.
Changing the MinVersion of a field breaks backward-compatibility.
Changing the MinVersion of a field breaks backward - compatibility .
def testUnionFieldMinVersionChange(self):
    self.assertNotBackwardCompatible(
        'union U { string a; [MinVersion=1] string b; };',
        'union U { string a; [MinVersion=2] string b; };')
def testUnionFieldMinVersionChange ( self ) : self . assertNotBackwardCompatible ( 'union U { string a; [MinVersion=1] string b; };' , 'union U { string a; [MinVersion=2] string b; };' )
Changing the MinVersion of a field breaks backward-compatibility.
Changing the MinVersion of a field breaks backward - compatibility .
"""Changing the MinVersion of a field breaks backward-compatibility."""
self