Tokens used as values result in an error

[dnicolson]

Consider the following code excerpt:

49F4A5871C583A25007C84A1 /* files */ = {
    isa = PBXGroup;
    children = (
    );
    name = files;
    sourceTree = "<group>";
};

Because files is a token it will cause the following error:

mismatched input 'files' expecting {QUOTED_STRING, NON_QUOTED_STRING}

It appears as though using any tokens for these values causes the same error.