def METHOD_NAME(self):
    """
    Adds the faces for the geometry for predefined order of vertices
    """
    self.faces = []
    sliceCount = self.detail_x + 1
    for i, j in itertools.product(range(self.detail_y), range(self.detail_x)):
        a = i * sliceCount + j
        b = i * sliceCount + j + 1
        c = (i + 1) * sliceCount + j + 1
        d = (i + 1) * sliceCount + j
        self.faces.append([a, b, d])
        self.faces.append([d, b, c])