defaultFeatureMessageSerializersModule    
  Provides a SerializersModule that handles polymorphic serialization and deserialization for various events and messages associated with features, agents, and strategies.
This module supports polymorphic serialization for the following base classes:
It registers the concrete subclasses of these base classes for serialization and deserialization:
AgentStartingEvent - Fired when an AI agent starts execution
AgentCompletedEvent - Fired when an AI agent completes execution
AgentClosingEvent - Fired before an AI agent is closed
AgentExecutionFailedEvent - Fired when an AI agent encounters a runtime error
StrategyStartingEvent - Fired when an AI agent strategy begins
StrategyCompletedEvent - Fired when an AI agent strategy completes
NodeExecutionStartingEvent - Fired when a node execution starts
NodeExecutionCompletedEvent - Fired when a node execution ends
ToolCallStartingEvent - Fired when a tool is called
ToolValidationFailedEvent - Fired when tool validation fails
ToolCallFailedEvent - Fired when a tool call fails
ToolCallCompletedEvent - Fired when a tool call returns a result
LLMCallStartingEvent - Fired before making an LLM call
LLMCallCompletedEvent - Fired after completing an LLM call
This configuration enables proper handling of the diverse event types encountered in the system by ensuring that the polymorphic serialization framework can correctly serialize and deserialize each subclass.