introduce null in writers methods

Author: shemogumbe

packages/serialization/multipart/src/multipartSerializationWriter.ts

@@ -51,7 +51,7 @@ export class MultipartSerializationWriter implements SerializationWriter {
 		throw new Error(`serialization of boolean values is not supported with multipart`);
 	};
 	// eslint-disable-next-line @typescript-eslint/no-unused-vars
-	public writeNumberValue = (key?: string, value?: number | null ): void => {
+	public writeNumberValue = (key?: string, value?: number | null): void => {
 		throw new Error(`serialization of number values is not supported with multipart`);
 	};
 	// eslint-disable-next-line @typescript-eslint/no-unused-vars
@@ -90,7 +90,7 @@ export class MultipartSerializationWriter implements SerializationWriter {
 		// eslint-disable-next-line @typescript-eslint/no-unused-vars
 		_key?: string,
 		// eslint-disable-next-line @typescript-eslint/no-unused-vars
-		_values?: T[]| null,
+		_values?: T[] | null,
 	): void => {
 		throw new Error(`serialization of collections is not supported with multipart`);
 	};
@@ -113,7 +113,7 @@ export class MultipartSerializationWriter implements SerializationWriter {
 		// eslint-disable-next-line @typescript-eslint/no-unused-vars
 		key?: string | undefined,
 		// eslint-disable-next-line @typescript-eslint/no-unused-vars
-		...values: (T  | null | undefined)[]
+		...values: (T | null | undefined)[]
 	): void => {
 		throw new Error(`serialization of enum values is not supported with multipart`);
 	};