Values.RemediationExecutionStepSourceName of the step from the SSM document.
type nonrec t = {name : String_.t option;The details of the step.
*)state : RemediationExecutionStepState.t option;The valid status of the step.
*)errorMessage : String_.t option;An error message if the step was interrupted during execution.
*)startTime : Date.t option;The time when the step started.
*)stopTime : Date.t option;The time when the step stopped.
*)}