build

Builds and returns an instance of GraphAIAgentService configured with the specified parameters.

This method finalizes the construction of a GraphAIAgentService by ensuring that all required components, such as the PromptExecutor and LLModel, are provided. It sets up the configuration using the provided or defaulted prompt, language model, and other agent settings. The resulting service is ready to manage AI agents in a graph-based strategy with support for configurable features.