diff --git a/generated/largestring.go b/generated/largestring.go
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--- /dev/null
+++ b/generated/largestring.go
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+/*
+ * Copyright (c) 2018 - present.  Boling Consulting Solutions (bcsw.net)
+ * Copyright 2020-present Open Networking Foundation
+
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+
+ * http://www.apache.org/licenses/LICENSE-2.0
+
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ * NOTE: This file was generated, manual edits will be overwritten!
+ *
+ * Generated by 'goCodeGenerator.py':
+ *              https://github.com/cboling/OMCI-parser/README.md
+ */
+
+package generated
+
+import "github.com/deckarep/golang-set"
+
+// LargeStringClassID is the 16-bit ID for the OMCI
+// Managed entity Large string
+const LargeStringClassID = ClassID(157) // 0x009d
+
+var largestringBME *ManagedEntityDefinition
+
+// LargeString (Class ID: #157 / 0x009d)
+//	The large string ME holds character strings longer than 25-bytes, up to 375-bytes. It is
+//	maintained in up to 15 parts, each part containing 25-bytes. If the final part contains fewer
+//	than 25-bytes, it is terminated by at least one null byte. For example:
+//
+//	Or
+//
+//	Instances of this ME are created and deleted by the OLT. Under some circumstances, they may also
+//	be created by the ONU. To use this ME, the OLT or ONU instantiates the large string ME and then
+//	points to the created ME from other ME instances. Systems that maintain the large string should
+//	ensure that the large string ME is not deleted while it is still linked.
+//
+//	Relationships
+//		An instance of this ME may be cited by any ME that requires a text string longer than 25-bytes.
+//
+//	Attributes
+//		Managed Entity Id
+//			This attribute uniquely identifies each instance of this ME. The value 0xFFFF is reserved. When
+//			the large string is to be used as an IPv6 address, the value 0 is also reserved. The OLT should
+//			create large string MEs starting at 1 (or 0), and numbering upwards. The ONU should create large
+//			string MEs starting at 65534 (0xFFFE) and numbering downwards. (R,-setbycreate) (mandatory)
+//			(2-bytes)
+//
+//		Number Of Parts
+//			This attribute specifies the number of non-empty parts that form the large string. This
+//			attribute defaults to 0 to indicate no large string content is defined.(R,-W) (mandatory)
+//			(1-byte)
+//
+//			Fifteen additional attributes are defined in the following; they are identical. The large string
+//			is simply divided into as many parts as necessary, starting at part 1. If the end of the string
+//			does not lie at a part boundary, it is marked with a null byte.
+//
+//		Part 1
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 2
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 3
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 4
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 5
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 6
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 7
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 8
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 9
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 10
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 11
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 12
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 13
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 14
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+//		Part 15
+//			Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9,  Part 10, Part 11, Part
+//			12, Part 13, Part 14, Part 15: (R,-W) (mandatory) (25-bytes * 15 attributes)
+//
+type LargeString struct {
+	ManagedEntityDefinition
+	Attributes AttributeValueMap
+}
+
+func init() {
+	largestringBME = &ManagedEntityDefinition{
+		Name:    "LargeString",
+		ClassID: 157,
+		MessageTypes: mapset.NewSetWith(
+			Create,
+			Delete,
+			Get,
+			Set,
+		),
+		AllowedAttributeMask: 0xffff,
+		AttributeDefinitions: AttributeDefinitionMap{
+			0:  Uint16Field("ManagedEntityId", PointerAttributeType, 0x0000, 0, mapset.NewSetWith(Read, SetByCreate), false, false, false, 0),
+			1:  ByteField("NumberOfParts", UnsignedIntegerAttributeType, 0x8000, 0, mapset.NewSetWith(Read, Write), true, false, false, 1),
+			2:  MultiByteField("Part1", OctetsAttributeType, 0x4000, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 2),
+			3:  MultiByteField("Part2", OctetsAttributeType, 0x2000, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 3),
+			4:  MultiByteField("Part3", OctetsAttributeType, 0x1000, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 4),
+			5:  MultiByteField("Part4", OctetsAttributeType, 0x0800, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 5),
+			6:  MultiByteField("Part5", OctetsAttributeType, 0x0400, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 6),
+			7:  MultiByteField("Part6", OctetsAttributeType, 0x0200, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 7),
+			8:  MultiByteField("Part7", OctetsAttributeType, 0x0100, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 8),
+			9:  MultiByteField("Part8", OctetsAttributeType, 0x0080, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 9),
+			10: MultiByteField("Part9", OctetsAttributeType, 0x0040, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 10),
+			11: MultiByteField("Part10", OctetsAttributeType, 0x0020, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 11),
+			12: MultiByteField("Part11", OctetsAttributeType, 0x0010, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 12),
+			13: MultiByteField("Part12", OctetsAttributeType, 0x0008, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 13),
+			14: MultiByteField("Part13", OctetsAttributeType, 0x0004, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 14),
+			15: MultiByteField("Part14", OctetsAttributeType, 0x0002, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 15),
+			16: MultiByteField("Part15", OctetsAttributeType, 0x0001, 25, toOctets("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="), mapset.NewSetWith(Read, Write), true, false, false, 16),
+		},
+		Access:  CreatedByOlt,
+		Support: UnknownSupport,
+	}
+}
+
+// NewLargeString (class ID 157) creates the basic
+// Managed Entity definition that is used to validate an ME of this type that
+// is received from or transmitted to the OMCC.
+func NewLargeString(params ...ParamData) (*ManagedEntity, OmciErrors) {
+	return NewManagedEntity(*largestringBME, params...)
+}