Fix body nullability

specification/_global/bulk/BulkRequest.ts

@@ -97,7 +97,7 @@ export interface Request<TDocument, TPartialDocument> extends RequestBase {
   // This declaration captures action_and_meta_data (OperationContainer) and the two kinds of sources
   // that can follow: an update action for update operations and anything for index or create operations.
   // /!\ must be kept in sync with BulkMonitoringRequest
-  body?: Array<
+  body: Array<
     OperationContainer | UpdateAction<TDocument, TPartialDocument> | TDocument
   >
 }

specification/_global/create/CreateRequest.ts

@@ -91,5 +91,5 @@ export interface Request<TDocument> extends RequestBase {
   /**
    * Request body contains the JSON source for the document data.
    * @codegen_name document */
-  body?: TDocument
+  body: TDocument
 }

specification/_global/index/IndexRequest.ts

@@ -113,5 +113,5 @@ export interface Request<TDocument> extends RequestBase {
   /**
    * Request body contains the JSON source for the document data.
    */
-  body?: TDocument
+  body: TDocument
 }

specification/_global/msearch/MultiSearchRequest.ts

@@ -92,5 +92,5 @@ export interface Request extends RequestBase {
     typed_keys?: boolean
   }
   /** @codegen_name searches */
-  body?: Array<RequestItem>
+  body: Array<RequestItem>
 }

specification/fleet/msearch/MultiSearchRequest.ts

@@ -111,5 +111,5 @@ export interface Request extends RequestBase {
     allow_partial_search_results?: boolean
   }
   /** @codegen_name searches */
-  body?: Array<RequestItem>
+  body: Array<RequestItem>
 }

specification/indices/downsample/Request.ts

@@ -40,5 +40,5 @@ export interface Request extends RequestBase {
     target_index: IndexName
   }
   /** @codegen_name config */
-  body?: DownsampleConfig
+  body: DownsampleConfig
 }

specification/ml/validate_detector/MlValidateDetectorRequest.ts

@@ -27,5 +27,5 @@ import { RequestBase } from '@_types/Base'
  */
 export interface Request extends RequestBase {
   /** @codegen_name detector */
-  body?: Detector
+  body: Detector
 }

specification/monitoring/bulk/BulkMonitoringRequest.ts

@@ -53,7 +53,7 @@ export interface Request<TDocument, TPartialDocument> extends RequestBase {
   /** @codegen_name operations */
   // BulkMonitoringRequest accepts a body request that has the same format as the BulkRequest
   // See BulkRequest for additional notes.
-  body?: Array<
+  body: Array<
     OperationContainer | UpdateAction<TDocument, TPartialDocument> | TDocument
   >
 }

specification/security/put_privileges/SecurityPutPrivilegesRequest.ts

@@ -33,5 +33,5 @@ export interface Request extends RequestBase {
     refresh?: Refresh
   }
   /** @codegen_name privileges */
-  body?: Dictionary<string, Dictionary<string, Actions>>
+  body: Dictionary<string, Dictionary<string, Actions>>
 }