'Return an iterable (and indexable) object containing the diagnostics.'

@property
def diagnostics(self):

    class DiagIterator:
        def __init__(self, tu):
            self.tu = tu
        def __len__(self):
            return int(conf.lib.clang_getNumDiagnostics(self.tu))
        def __getitem__(self, key):
            diag = conf.lib.clang_getDiagnostic(self.tu, key)
            if (not diag):
                raise IndexError
            return Diagnostic(diag)
    return DiagIterator(self)
