docs: func (s *ApplicationConfigurationUpdate) Validate() error {
  	invalidParams := request.ErrInvalidParams{Context: "ApplicationConfigurationUpdate"}
  	if s.ApplicationCodeConfigurationUpdate != nil {
  		if err := s.ApplicationCodeConfigurationUpdate.Validate(); err != nil {
  			invalidParams.AddNested("ApplicationCodeConfigurationUpdate", err.(request.ErrInvalidParams))
  		}
  	}
  	if s.ApplicationSnapshotConfigurationUpdate != nil {
  		if err := s.ApplicationSnapshotConfigurationUpdate.Validate(); err != nil {
  			invalidParams.AddNested("ApplicationSnapshotConfigurationUpdate", err.(request.ErrInvalidParams))
  		}
  	}
  	if s.EnvironmentPropertyUpdates != nil {
  		if err := s.EnvironmentPropertyUpdates.Validate(); err != nil {
  			invalidParams.AddNested("EnvironmentPropertyUpdates", err.(request.ErrInvalidParams))
  		}
  	}
  	if s.FlinkApplicationConfigurationUpdate != nil {
  		if err := s.FlinkApplicationConfigurationUpdate.Validate(); err != nil {
  			invalidParams.AddNested("FlinkApplicationConfigurationUpdate", err.(request.ErrInvalidParams))
  		}
  	}
  	if s.SqlApplicationConfigurationUpdate != nil {
  		if err := s.SqlApplicationConfigurationUpdate.Validate(); err != nil {
  			invalidParams.AddNested("SqlApplicationConfigurationUpdate", err.(request.ErrInvalidParams))
  		}
  	}
  
  	if invalidParams.Len() > 0 {
  		return invalidParams
  	}
  	return nil
  }