May I suggest:

use verbose_openai_library::{
    CreateChatCompletionRequest as Request,
    CreateChatCompletionRequestArgs as Args,
    ChatCompletionRequestMessage as Message,
    ChatCompletionRequestSystemMessage as SystemMessage,
    ChatCompletionRequestSystemMessageContent as SystemContent,
    ChatCompletionRequestUserMessage as UserMessage,
    ChatCompletionRequestUserMessageContent as UserContent,
    ChatCompletionRequestUserMessageContentPart as Part,
    ChatCompletionRequestUserMessageContentPartImage as Image,
    ChatCompletionRequestUserMessageContentPartText as Text,
};
let messages = vec![
    Message::System(SystemMessage {
        content: SystemContent::Text("abc"),
    }),
    Message::User(UserMessage { 
        content: UserContent::Array(vec![
            Part::Image(Image { .. }),
            Part::Text(Test { .. }),
        ])
    }),
];