VOL-4337: Code upgrade for 3/2020 G.988 support and remaining Extended Message Set support

Change-Id: I6c5e1a167216ad9b51e9da89460e9909465ae1bc
diff --git a/generated/twdmchannelmanagedentity.go b/generated/twdmchannelmanagedentity.go
index 78547a8..b0b0ce5 100644
--- a/generated/twdmchannelmanagedentity.go
+++ b/generated/twdmchannelmanagedentity.go
@@ -27,11 +27,11 @@
 
 // TwdmChannelManagedEntityClassID is the 16-bit ID for the OMCI
 // Managed entity TWDM channel managed entity
-const TwdmChannelManagedEntityClassID ClassID = ClassID(443)
+const TwdmChannelManagedEntityClassID = ClassID(443) // 0x01bb
 
 var twdmchannelmanagedentityBME *ManagedEntityDefinition
 
-// TwdmChannelManagedEntity (class ID #443)
+// TwdmChannelManagedEntity (Class ID: #443 / 0x01bb)
 //	This ME provides an anchor for the MEs involved in collection of PM statistics per TWDM channel,
 //	as stipulated by clause 14 of [ITU-T-G.989.3]. Instances of this ME are instantiated
 //	autonomously by the ONU.
@@ -43,31 +43,29 @@
 //
 //	Attributes
 //		Managed Entity Id
-//			Managed entity ID: This attribute uniquely identifies each instance of this ME. This 2-byte
-//			number is represented as 0xSSBB, where SS indicates the ONU slot ID, and BB is the TWDM channel
-//			ME number assigned by the ONU itself, starting from 0 in the ascending order. (R) (mandatory)
-//			(2-bytes)
+//			This attribute uniquely identifies each instance of this ME. This 2-byte number is represented
+//			as 0xSSBB, where SS indicates the ONU slot ID, and BB is the TWDM channel ME number assigned by
+//			the ONU itself, starting from 0 in the ascending order. (R) (mandatory) (2-bytes)
 //
 //		Active Channel Indication
-//			Active channel indication: The default value is false. The ONU sets the attribute to true when
-//			it receives the Channel_Profile PLOAM messages for that channel. The ONU clears the attribute
-//			when it receives the Channel_Profile PLOAM message marked ``void'' for that channel. (R)
-//			(mandatory) (1-byte)
+//			The default value is false. The ONU sets the attribute to true when it receives the
+//			Channel_Profile PLOAM messages for that channel. The ONU clears the attribute when it receives
+//			the Channel_Profile PLOAM message marked ``void'' for that channel. (R) (mandatory) (1-byte)
 //
 //		Operational Channel Indication
-//			Operational channel indication: A Boolean attribute that is set to true for an active TWDM
-//			channel in which the ONT is currently operating. The operational statistic is accumulated in the
-//			PM history data MEs associated with that TWDM channel. (R) (mandatory) (1-byte)
+//			A Boolean attribute that is set to true for an active TWDM channel in which the ONT is currently
+//			operating. The operational statistic is accumulated in the PM history data MEs associated with
+//			that TWDM channel. (R) (mandatory) (1-byte)
 //
 //		Downstream Wavelength Channel
-//			Downstream wavelength channel: For an active TWDM channel, this attribute identifies the
-//			downstream wavelength channel in reference to Table 11-2 of [ITU-T-G.989.2]. For an inactive
-//			channel it has value 0xFF. (R) (mandatory) (1-byte)
+//			For an active TWDM channel, this attribute identifies the downstream wavelength channel in
+//			reference to Table 11-2 of [ITU-T-G.989.2]. For an inactive channel it has value 0xFF. (R)
+//			(mandatory) (1-byte)
 //
 //		Upstream Wavelength Channel
-//			Upstream wavelength channel: For an active TWDM channel, this attribute identifies the upstream
-//			wavelength channel in reference to Table VIII-5 of [ITU-T-G.989.2]. For an inactive channel its
-//			value of 0xFF. (R) (mandatory) (1-byte)
+//			For an active TWDM channel, this attribute identifies the upstream wavelength channel in
+//			reference to Table VIII-5 of [ITU-T-G.989.2]. For an inactive channel its value of 0xFF. (R)
+//			(mandatory) (1-byte)
 //
 type TwdmChannelManagedEntity struct {
 	ManagedEntityDefinition