Changes to Generate with Nano Banana 2.1

removed the media type application/json from the request body

removed the request property image_asset_identifiers

removed the request property private

removed the request property target_collection_id

api operation id post_generate_image_v2_nano_banana21 removed and replaced with imagesGenerate_post_generate_image_v2_nano_banana21

the endpoint scheme security ApiKeyAuth was added to the API

request body became optional

added the media type application/json for the response with the status 400

added the media type application/json for the response with the status 401

added the media type application/json for the response with the status 422

added the media type application/json for the response with the status 500

added the media type application/json for the response with the status 503

endpoint added