How to use the aliyun-python-sdk-core.alibabacloud.vendored.requests.packages.urllib3.contrib._securetransport.bindings.CoreFoundation.CFRelease function in aliyun-python-sdk-core

def close(self):
        # TODO: should I do clean shutdown here? Do I have to?
        if self._makefile_refs < 1:
            self._closed = True
            if self.context:
                CoreFoundation.CFRelease(self.context)
                self.context = None
            if self._client_cert_chain:
                CoreFoundation.CFRelease(self._client_cert_chain)
                self._client_cert_chain = None
            if self._keychain:
                Security.SecKeychainDelete(self._keychain)
                CoreFoundation.CFRelease(self._keychain)
                shutil.rmtree(self._keychain_dir)
                self._keychain = self._keychain_dir = None
            return self.socket.close()
        else:
            self._makefile_refs -= 1

# Handshook? Handshaken?
                return None

            leaf = Security.SecTrustGetCertificateAtIndex(trust, 0)
            assert leaf

            # Ok, now we want the DER bytes.
            certdata = Security.SecCertificateCopyData(leaf)
            assert certdata

            data_length = CoreFoundation.CFDataGetLength(certdata)
            data_buffer = CoreFoundation.CFDataGetBytePtr(certdata)
            der_bytes = ctypes.string_at(data_buffer, data_length)
        finally:
            if certdata:
                CoreFoundation.CFRelease(certdata)
            if trust:
                CoreFoundation.CFRelease(trust)

        return der_bytes

def close(self):
        # TODO: should I do clean shutdown here? Do I have to?
        if self._makefile_refs < 1:
            self._closed = True
            if self.context:
                CoreFoundation.CFRelease(self.context)
                self.context = None
            if self._client_cert_chain:
                CoreFoundation.CFRelease(self._client_cert_chain)
                self._client_cert_chain = None
            if self._keychain:
                Security.SecKeychainDelete(self._keychain)
                CoreFoundation.CFRelease(self._keychain)
                shutil.rmtree(self._keychain_dir)
                self._keychain = self._keychain_dir = None
            return self.socket.close()
        else:
            self._makefile_refs -= 1

def close(self):
        # TODO: should I do clean shutdown here? Do I have to?
        if self._makefile_refs < 1:
            self._closed = True
            if self.context:
                CoreFoundation.CFRelease(self.context)
                self.context = None
            if self._client_cert_chain:
                CoreFoundation.CFRelease(self._client_cert_chain)
                self._client_cert_chain = None
            if self._keychain:
                Security.SecKeychainDelete(self._keychain)
                CoreFoundation.CFRelease(self._keychain)
                shutil.rmtree(self._keychain_dir)
                self._keychain = self._keychain_dir = None
            return self.socket.close()
        else:
            self._makefile_refs -= 1

_assert_no_error(result)

            result = Security.SecTrustSetAnchorCertificatesOnly(trust, True)
            _assert_no_error(result)

            trust_result = Security.SecTrustResultType()
            result = Security.SecTrustEvaluate(
                trust, ctypes.byref(trust_result)
            )
            _assert_no_error(result)
        finally:
            if trust:
                CoreFoundation.CFRelease(trust)

            if cert_array is None:
                CoreFoundation.CFRelease(cert_array)

        # Ok, now we can look at what the result was.
        successes = (
            SecurityConst.kSecTrustResultUnspecified,
            SecurityConst.kSecTrustResultProceed
        )
        if trust_result.value not in successes:
            raise ssl.SSLError(
                "certificate verify failed, error code: %d" %
                trust_result.value
            )

leaf = Security.SecTrustGetCertificateAtIndex(trust, 0)
            assert leaf

            # Ok, now we want the DER bytes.
            certdata = Security.SecCertificateCopyData(leaf)
            assert certdata

            data_length = CoreFoundation.CFDataGetLength(certdata)
            data_buffer = CoreFoundation.CFDataGetBytePtr(certdata)
            der_bytes = ctypes.string_at(data_buffer, data_length)
        finally:
            if certdata:
                CoreFoundation.CFRelease(certdata)
            if trust:
                CoreFoundation.CFRelease(trust)

        return der_bytes