Bad argument type for built-in operation

[Vinayak Chakraborty]

I am trying to create a structure snippet here client is the instance of 
GoogleAdsClient. Can you help me with updated code?

def create_snippet_asset(client, camp_data):
    try:
        # Define the constants
        CUSTOMER_ID = str(camp_data["customer_id"])
        AD_GROUP_ID = str(camp_data["ad_group_id"])

        # Get the AdGroupExtensionSettingService
        ad_group_extension_setting_service = client.get_service(
"AdGroupExtensionSettingService")

        # Create a structure snippet extension
        structure_snippet_extension = client.get_type(
"StructuredSnippetFeedItem")
        structure_snippet_extension.header = "Brands"
        # string_value = client.get_type("StringValue", version="v14")
        structure_snippet_extension.values.extend([
                "Nike",
                "Adidas",
                "Reebok"
            ])

        # Create an ad group extension setting operation
        ad_group_extension_setting_operation = client.get_type(
"AdGroupExtensionSettingOperation")
        ad_group_extension_setting = 
ad_group_extension_setting_operation.create
        ad_group_extension_setting.ad_group = 
ad_group_extension_setting_service.ad_group_path(
            CUSTOMER_ID, AD_GROUP_ID
        )
        ad_group_extension_setting.extension_type = client
.enums.ExtensionTypeEnum.STRUCTURED_SNIPPET
        
ad_group_extension_setting.extension_feed_items.append(structure_snippet_extension)

        # Add the ad group extension setting
        response = 
ad_group_extension_setting_service.mutate_ad_group_extension_settings(
            customer_id=CUSTOMER_ID, operations=
[ad_group_extension_setting_operation]
        )

        # Print the result
        print(f"Created a structure snippet extension with resource name: {
response.results[0].resource_name}")

    except Exception as e:
        print(f'Error occured while creating structure snippet {e}')

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