diff --git a/npm/ng-packs/packages/schematics/src/models/api-definition.ts b/npm/ng-packs/packages/schematics/src/models/api-definition.ts
index 1b897daef0..68a607ac1c 100644
--- a/npm/ng-packs/packages/schematics/src/models/api-definition.ts
+++ b/npm/ng-packs/packages/schematics/src/models/api-definition.ts
@@ -16,6 +16,7 @@ export interface Type {
 
 export interface PropertyDef {
   name: string;
+  jsonName: string | null;
   type: string;
   typeSimple: string;
   isRequired: boolean;
@@ -61,6 +62,7 @@ export interface ParameterInSignature {
 export interface ParameterInBody {
   nameOnMethod: string;
   name: string;
+  jsonName: string | null;
   type: string;
   typeSimple: string;
   isOptional: boolean;