diff --git a/npm/ng-packs/packages/schematics/src/constants/volo.ts b/npm/ng-packs/packages/schematics/src/constants/volo.ts
index 12aa166d66..00fde72c79 100644
--- a/npm/ng-packs/packages/schematics/src/constants/volo.ts
+++ b/npm/ng-packs/packages/schematics/src/constants/volo.ts
@@ -1,22 +1 @@
-import { Interface, Property } from '../models';
-
 export const VOLO_REGEX = /^Volo\.Abp\.(Application\.Dtos|ObjectExtending)/;
-
-export const VOLO_NAME_VALUE = new Interface({
-  base: null,
-  identifier: 'NameValue<T = string>',
-  ref: 'Volo.Abp.NameValue',
-  namespace: 'Volo.Abp',
-  properties: [
-    new Property({
-      name: 'name',
-      type: 'string',
-      refs: ['System.String'],
-    }),
-    new Property({
-      name: 'value',
-      type: 'T',
-      refs: ['T'],
-    }),
-  ],
-});
diff --git a/npm/ng-packs/packages/schematics/src/models/model.ts b/npm/ng-packs/packages/schematics/src/models/model.ts
index 6c7feb318d..048c08a1b0 100644
--- a/npm/ng-packs/packages/schematics/src/models/model.ts
+++ b/npm/ng-packs/packages/schematics/src/models/model.ts
@@ -1,43 +1,97 @@
 import { Import } from './import';
-import { Omissible } from './util';
+import { Options } from './util';
 
 export class Model {
-  imports: Import[] = [];
-  interfaces: Interface[] = [];
-  namespace: string;
-  path: string;
+  readonly imports: Import[] = [];
+  readonly interfaces: Interface[] = [];
+  readonly namespace: string;
+  readonly path: string;
 
   constructor(options: ModelOptions) {
     Object.assign(this, options);
   }
 }
 
-export type ModelOptions = Omissible<Model, 'imports' | 'interfaces'>;
+export type ModelOptions = Options<Model, 'imports' | 'interfaces'>;
 
 export class Interface {
-  base: string | null;
-  identifier: string;
-  namespace: string;
-  properties: Property[] = [];
-  ref: string;
+  readonly base: string | null;
+  readonly identifier: string;
+  readonly namespace: string;
+  readonly generics: Generic[] = [];
+  readonly properties: Property[] = [];
+  readonly ref: string;
 
   constructor(options: InterfaceOptions) {
     Object.assign(this, options);
   }
 }
 
-export type InterfaceOptions = Omissible<Interface, 'properties'>;
+export type InterfaceOptions = Options<Interface, 'generics' | 'properties'>;
 
-export class Property {
-  name: string;
-  type: string;
-  default = '';
-  optional: '' | '?' = '';
-  refs: string[] = [];
+abstract class TypeRef {
+  readonly refs: string[] = [];
 
-  constructor(options: PropertyOptions) {
+  protected _type = '';
+  get type() {
+    return this._type;
+  }
+  set type(value: string) {
+    if (!value) return;
+    this._type = value;
+  }
+
+  protected _default = '';
+  get default() {
+    return this._default;
+  }
+  set default(value: string) {
+    if (!value) return;
+    this._default = ` = ${value}`;
+  }
+
+  constructor(options: TypeRefOptions) {
     Object.assign(this, options);
   }
+
+  setDefault(value: string) {
+    this.default = value;
+  }
+
+  setType(value: string) {
+    this.type = value;
+  }
+}
+
+type TypeRefOptionalKeys = 'default' | 'refs';
+type TypeRefOptions = Options<TypeRef, TypeRefOptionalKeys>;
+
+export class Generic extends TypeRef {
+  constructor(options: GenericOptions) {
+    super(options);
+  }
+}
+
+export type GenericOptions = Options<Generic, TypeRefOptionalKeys>;
+
+export class Property extends TypeRef {
+  readonly name: string;
+  private _optional: '' | '?' = '';
+  get optional() {
+    return this.default ? '' : this._optional;
+  }
+
+  set optional(value: '' | '?') {
+    this._optional = value;
+  }
+
+  constructor(options: PropertyOptions) {
+    super(options);
+  }
+
+  setOptional(isOptional: boolean) {
+    this.optional = isOptional ? '?' : '';
+  }
 }
 
-export type PropertyOptions = Omissible<Property, 'default' | 'optional' | 'refs'>;
+export type PropertyOptions = Options<Property, TypeRefOptionalKeys | 'optional'>;
diff --git a/npm/ng-packs/packages/schematics/src/models/util.ts b/npm/ng-packs/packages/schematics/src/models/util.ts
index 5ff732ccfe..0588ed7d5b 100644
--- a/npm/ng-packs/packages/schematics/src/models/util.ts
+++ b/npm/ng-packs/packages/schematics/src/models/util.ts
@@ -1,2 +1,16 @@
 // Omissible (given keys will become optional)
 export type Omissible<T, K extends keyof T> = Partial<Pick<T, K>> & Omit<T, K>;
+
+// ExcludeKeys (keys will be excluded based on their type)
+type ExcludeKeys<Type, Excluded> = Exclude<
+  {
+    [Key in keyof Type]: Type[Key] extends Excluded ? never : Key;
+  }[keyof Type],
+  never
+>;
+
+// tslint:disable-next-line: ban-types
+type ExcludeMethods<Type> = Pick<Type, ExcludeKeys<Type, Function>>;
+
+// Options (methods will be omitted, given keys will become optional)
+export type Options<T, K extends keyof ExcludeMethods<T>> = Omissible<ExcludeMethods<T>, K>;
diff --git a/npm/ng-packs/packages/schematics/src/utils/generics.ts b/npm/ng-packs/packages/schematics/src/utils/generics.ts
new file mode 100644
index 0000000000..8dc7fb2629
--- /dev/null
+++ b/npm/ng-packs/packages/schematics/src/utils/generics.ts
@@ -0,0 +1,100 @@
+import { Generic } from '../models';
+
+export class GenericsCollector {
+  private _generics: Generic[] = [];
+  get generics() {
+    return this._generics;
+  }
+
+  apply = (value: string, index: number) => {
+    const generic = this.get(index);
+    if (generic) {
+      if (!generic.type) generic.setType(value);
+      return value + generic.default;
+    }
+
+    return value;
+  };
+
+  constructor(private getTypeIdentifier = (type: string) => type) {}
+
+  private createGeneric(type: string, ref: string, defaultValue: string) {
+    const _default = this.getTypeIdentifier(defaultValue);
+    const refs = [generateRefWithPlaceholders(ref)];
+    const generic = new Generic({ type, default: _default, refs });
+    return generic;
+  }
+
+  private register(index: number, generic: Generic) {
+    const existing = this.get(index);
+    if (existing) {
+      existing.setDefault(generic.default);
+      existing.setType(generic.type);
+    } else this.set(index, generic);
+  }
+
+  collect(generics: string[], genericArguments: string[]) {
+    generics.forEach((ref, i) => {
+      const generic = this.createGeneric(
+        genericArguments[i],
+        ref,
+        genericArguments.includes(ref) ? '' : ref,
+      );
+      this.register(i, generic);
+    });
+  }
+
+  get(index: number) {
+    return this.generics[index];
+  }
+
+  set(index: number, value: Generic) {
+    this.generics[index] = value;
+  }
+
+  reset() {
+    this._generics = [];
+  }
+}
+
+export function generateRefWithPlaceholders(sourceType: string) {
+  let { identifier, generics } = extractGenerics(sourceType);
+
+  identifier = identifier;
+  generics = generics.map((_, i) => `T${i}`);
+
+  return generics.length ? `${identifier}<${generics}>` : identifier;
+}
+
+export function extractSimpleGenerics(sourceType: string) {
+  const { identifier, generics } = extractGenerics(sourceType);
+
+  return {
+    identifier: getLastSegment(identifier),
+    generics: generics.map(getLastSegment),
+  };
+}
+
+export function extractGenerics(sourceType: string) {
+  const regex = /(?<identifier>[^<]+)(<(?<generics>.+)>)?/g;
+  const { identifier = '', generics = '' } = regex.exec(sourceType)?.groups ?? {};
+
+  return {
+    identifier,
+    generics: generics.split(/,\s*/).filter(Boolean),
+  };
+}
+
+function getLastSegment(str: string) {
+  return str.split('.').pop()!;
+}
+
+export function replacePlaceholdersWithGenerics(
+  type: string,
+  generics: string[],
+  genericsCollector: GenericsCollector,
+) {
+  return generics
+    .map(genericsCollector.apply)
+    .reduce((acc, v, i) => acc.replace(new RegExp(`([<, ])T${i}([,>])`, 'g'), `$1${v}$2`), type);
+}
diff --git a/npm/ng-packs/packages/schematics/src/utils/index.ts b/npm/ng-packs/packages/schematics/src/utils/index.ts
index 178920dccc..e6df05b2e2 100644
--- a/npm/ng-packs/packages/schematics/src/utils/index.ts
+++ b/npm/ng-packs/packages/schematics/src/utils/index.ts
@@ -5,6 +5,7 @@ export * from './barrel';
 export * from './common';
 export * from './enum';
 export * from './file';
+export * from './generics';
 export * from './import';
 export * from './model';
 export * from './namespace';
diff --git a/npm/ng-packs/packages/schematics/src/utils/model.ts b/npm/ng-packs/packages/schematics/src/utils/model.ts
index fc8dde37c1..49d3c0fcf5 100644
--- a/npm/ng-packs/packages/schematics/src/utils/model.ts
+++ b/npm/ng-packs/packages/schematics/src/utils/model.ts
@@ -1,5 +1,11 @@
-import { VOLO_NAME_VALUE, VOLO_REGEX } from '../constants';
+import { VOLO_REGEX } from '../constants';
 import { Interface, Model, Property, PropertyDef, Type, TypeWithEnum } from '../models';
+import {
+  extractGenerics,
+  generateRefWithPlaceholders,
+  GenericsCollector,
+  replacePlaceholdersWithGenerics,
+} from './generics';
 import { parseNamespace } from './namespace';
 import { relativePathToModel } from './path';
 import { camel } from './text';
@@ -8,6 +14,7 @@ import {
   createTypeParser,
   createTypeSimplifier,
   createTypesToImportsReducer,
+  extendsSelf,
   removeTypeModifiers,
 } from './type';
 
@@ -27,6 +34,7 @@ export function createImportRefsToModelReducer(params: ModelGeneratorParams) {
   return (models: Model[], importRefs: string[]) => {
     const enums: string[] = [];
     const interfaces = importRefs.reduce(reduceImportRefsToInterfaces, []);
+
     sortInterfaces(interfaces);
 
     interfaces.forEach(_interface => {
@@ -40,12 +48,9 @@ export function createImportRefsToModelReducer(params: ModelGeneratorParams) {
       const index = models.findIndex(m => m.namespace === _interface.namespace);
       if (index > -1) {
         if (models[index].interfaces.some(i => i.identifier === _interface.identifier)) return;
-        if (_interface.ref.startsWith(VOLO_NAME_VALUE.ref)) return;
 
         models[index].interfaces.push(_interface);
       } else {
-        if (_interface.ref.startsWith(VOLO_NAME_VALUE.ref)) _interface = VOLO_NAME_VALUE;
-
         const { namespace } = _interface;
 
         models.push(
@@ -70,7 +75,7 @@ export function createImportRefsToModelReducer(params: ModelGeneratorParams) {
             isEnum: false,
           });
 
-        _interface.properties.forEach(prop => {
+        [..._interface.properties, ..._interface.generics].forEach(prop => {
           prop.refs.forEach(ref => {
             const propType = types[ref];
             if (!propType) return;
@@ -100,38 +105,50 @@ export function createImportRefToInterfaceReducerCreator(params: ModelGeneratorP
   const parseType = createTypeParser(removeTypeModifiers);
   const simplifyType = createTypeSimplifier();
   const getIdentifier = (type: string) => removeTypeModifiers(simplifyType(type));
+  const genericsCollector = new GenericsCollector(getIdentifier);
 
   return reduceRefsToInterfaces;
 
-  function reduceRefsToInterfaces(interfaces: Interface[], ref: string) {
+  function reduceRefsToInterfaces(interfaces: Interface[], ref: string): Interface[] {
     const typeDef = types[ref];
     if (!typeDef) return interfaces;
 
     const namespace = parseNamespace(solution, ref);
 
-    const identifier = (typeDef.genericArguments ?? []).reduce(
-      (acc, t, i) => acc.replace(`T${i}`, t),
-      getIdentifier(ref),
-    );
+    let { baseType: base, genericArguments } = typeDef;
+    genericArguments = genericArguments || [];
+    let identifier = getIdentifier(ref);
+    identifier = replacePlaceholdersWithGenerics(identifier, genericArguments, genericsCollector);
+
+    if (base) {
+      if (extendsSelf(ref, base)) {
+        genericsCollector.collect(extractGenerics(base).generics, genericArguments);
+        return reduceRefsToInterfaces(interfaces, generateRefWithPlaceholders(base));
+      } else {
+        base = getIdentifier(base);
+      }
+    }
 
-    const base = typeDef.baseType ? getIdentifier(typeDef.baseType) : null;
-    const _interface = new Interface({ identifier, base, namespace, ref });
+    const { generics } = genericsCollector;
+    const _interface = new Interface({ identifier, base, namespace, ref, generics });
+    genericsCollector.reset();
 
     typeDef.properties?.forEach(prop => {
       const name = camel(prop.name);
-      const optional = isOptionalProperty(prop) ? '?' : '';
       const type = simplifyType(prop.typeSimple);
       const refs = parseType(prop.type).reduce(
         (acc: string[], r) => acc.concat(parseGenerics(r).toGenerics()),
         [],
       );
+      const property = new Property({ name, type, refs });
+      property.setOptional(isOptionalProperty(prop));
 
-      _interface.properties.push(new Property({ name, optional, type, refs }));
+      _interface.properties.push(property);
     });
 
     interfaces.push(_interface);
 
-    return _interface.properties
+    return [..._interface.properties, ..._interface.generics]
       .reduce<string[]>((refs, prop) => {
         prop.refs.forEach(type => {
           if (types[type]?.isEnum) return;
@@ -142,7 +159,7 @@ export function createImportRefToInterfaceReducerCreator(params: ModelGeneratorP
         return refs;
       }, [])
       .concat(base ? parseGenerics(typeDef.baseType!).toGenerics() : [])
-      .reduce<Interface[]>(reduceRefsToInterfaces, interfaces);
+      .reduce(reduceRefsToInterfaces, interfaces);
   }
 }
 
diff --git a/npm/ng-packs/packages/schematics/src/utils/service.ts b/npm/ng-packs/packages/schematics/src/utils/service.ts
index b8a2d692b2..70655c821d 100644
--- a/npm/ng-packs/packages/schematics/src/utils/service.ts
+++ b/npm/ng-packs/packages/schematics/src/utils/service.ts
@@ -83,8 +83,8 @@ export function createActionToSignatureMapper() {
     signature.parameters = action.parametersOnMethod.map(p => {
       const type = adaptType(p.typeSimple);
       const parameter = new Property({ name: p.name, type });
-      if (p.defaultValue) parameter.default = ` = ${p.defaultValue}`;
-      else if (p.isOptional) parameter.optional = '?';
+      parameter.setDefault(p.defaultValue);
+      parameter.setOptional(p.isOptional);
       return parameter;
     });
 
diff --git a/npm/ng-packs/packages/schematics/src/utils/type.ts b/npm/ng-packs/packages/schematics/src/utils/type.ts
index 781794c463..a087392d40 100644
--- a/npm/ng-packs/packages/schematics/src/utils/type.ts
+++ b/npm/ng-packs/packages/schematics/src/utils/type.ts
@@ -1,7 +1,7 @@
-import { SYSTEM_TYPES } from '../constants';
-import { VOLO_REGEX } from '../constants/volo';
+import { SYSTEM_TYPES, VOLO_REGEX } from '../constants';
 import { eImportKeyword } from '../enums';
 import { Import, TypeWithEnum } from '../models';
+import { extractSimpleGenerics } from './generics';
 import { parseNamespace } from './namespace';
 import { relativePathToEnum, relativePathToModel } from './path';
 import { parseGenerics } from './tree';
@@ -15,14 +15,9 @@ export function createTypeSimplifier() {
 
     type = /any</.test(type) ? 'any' : type;
 
-    const regexp = new RegExp(/.*(?<=\.)(?<generic>.+)<.*(?<=[\.<])(?<genericType>.+)>/gm);
-    const { generic, genericType } = regexp.exec(type)?.groups ?? {};
+    const { identifier, generics } = extractSimpleGenerics(type);
 
-    return generic
-      ? generic === 'any'
-        ? 'any'
-        : `${generic}<${genericType}>`
-      : type.split('.').pop()!;
+    return generics.length ? `${identifier}<${generics.join(', ')}>` : identifier;
   });
 
   return (type: string) => {
@@ -40,9 +35,7 @@ export function createTypeParser(replacerFn = (t: string) => t) {
 
 export function createTypeNormalizer(replacerFn = (t: string) => t) {
   return (type: string) => {
-    type = normalizeTypeAnnotations(type);
-
-    return replacerFn(type);
+    return replacerFn(normalizeTypeAnnotations(type));
   };
 }
 
@@ -56,8 +49,7 @@ export function flattenDictionaryTypes(types: string[], type: string) {
 }
 
 export function normalizeTypeAnnotations(type: string) {
-  type = type.replace(/\[(.+)+\]/g, '$1[]');
-  return type.replace(/\?/g, '');
+  return type.replace(/\[(.+)+\]/g, '$1[]').replace(/\?/g, '');
 }
 
 export function removeGenerics(type: string) {
@@ -115,3 +107,8 @@ export function createTypeAdapter() {
   const simplifyType = createTypeSimplifier();
   return (type: string) => parseGenerics(type, node => simplifyType(node.data)).toString();
 }
+
+// naming here is depictive only
+export function extendsSelf(type: string, base: string) {
+  return removeGenerics(base) === removeGenerics(type);
+}