addHistory              Add history for chating context
countTokens             Count Tokens for Gemini Content (Including
                        Images)
gemini                  Generate text from text with Gemini
gemini.vertex           Generate text from text with Gemini Vertex API
gemini_audio            Analyze audio using Gemini
gemini_audio.vertex     Analyze Audio using Gemini Vertex API
gemini_chat             Multi-turn conversations (chat)
gemini_image            Generate text from text and image with Gemini
gemini_image.vertex     Generate text from text and image with Gemini
                        Vertex API
gen_docs                Generate Roxygen Documentation
gen_image               Generate and save image using Gemini
gen_tests               Generates unit test code for an R function.
setEnv                  Store API key in local environment file
token.vertex            Generate Gemini Access Token and Endpoint URL
