As mentioned in guide navigate to working folder in terminal where are only DSDT.aml, SSDT-0.aml, SSDT-1.aml, SSDT-2.aml, SSDT-3.aml and SSDT-4.aml
Then:
External(MDBG, MethodObj, 1)
External(_GPE.MMTB, MethodObj, 0)
External(_SB.PCI0.LPCB.H_EC.ECWT, MethodObj, 2)...