def METHOD_NAME(self):
    c4 = self.makeSubtable(4, 3, 1, 0)
    c4.cmap = {0x0041: "A", 0x0391: "A"}
    c12 = self.makeSubtable(12, 3, 10, 0)
    c12.cmap = {0x10314: "u10314"}
    cmap = table__c_m_a_p()
    cmap.tables = [c4, c12]
    self.assertEqual(
        cmap.buildReversed(), {"A": {0x0041, 0x0391}, "u10314": {0x10314}}
    )