@property
def source_version(self):
    if self.upgrade:
        return self.upgrade.source_plan.engine.full_inicial_version
    elif self.upgrade_patch:
        return self.upgrade_patch.source_patch_full_version
@property
def source_version(self):
    if self.upgrade:
        return self.upgrade.source_plan.engine.full_inicial_version
    elif self.upgrade_patch:
        return self.upgrade_patch.source_patch_full_version