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Expected Behavior

The DefaultToolCallingManager should process tool calls in parallel rather than sequentially when multiple independent tool calls are present in an AssistantMessage. This would significantly improve performance for scenarios requiring multiple concurrent AI tool interactions.

Current Behavior

The DefaultToolCallingManager processes tool calls sequentially using a simple for-loop:

for (AssistantMessage.ToolCall toolCall : assistantMessage.getToolCalls()) {
    // Sequential processing
}

This creates performance bottlenecks when dealing with multiple independent tool calls that could be executed concurrently.

Context

Proposed Solution

• Add parallel execution capability to DefaultToolCallingManager
• Ensure proper error handling and response ordering