def validate_and_build_instance_fleets(parsed_instance_fleets):
    """
    Helper method that converts --instance-fleets option value in
    create-cluster to Amazon Elastic MapReduce InstanceFleetConfig
    data type.
    """
    instance_fleets = []
    for instance_fleet in parsed_instance_fleets:
        instance_fleet_config = {}
        keys = instance_fleet.keys()
        if 'Name' in keys:
            instance_fleet_config['Name'] = instance_fleet['Name']
        else:
            instance_fleet_config['Name'] = instance_fleet['InstanceFleetType']
        instance_fleet_config['InstanceFleetType'] = instance_fleet[
            'InstanceFleetType']
        if 'TargetOnDemandCapacity' in keys:
            instance_fleet_config['TargetOnDemandCapacity'] = instance_fleet[
                'TargetOnDemandCapacity']
        if 'TargetSpotCapacity' in keys:
            instance_fleet_config['TargetSpotCapacity'] = instance_fleet[
                'TargetSpotCapacity']
        if 'InstanceTypeConfigs' in keys:
            if 'TargetSpotCapacity' in keys:
                for instance_type_config in instance_fleet[
                    'InstanceTypeConfigs']:
                    instance_type_config_keys = instance_type_config.keys()
            instance_fleet_config['InstanceTypeConfigs'] = instance_fleet[
                'InstanceTypeConfigs']
        if 'LaunchSpecifications' in keys:
            instanceFleetProvisioningSpecifications = instance_fleet[
                'LaunchSpecifications']
            instance_fleet_config['LaunchSpecifications'] = {}
            if 'SpotSpecification' in instanceFleetProvisioningSpecifications:
                instance_fleet_config['LaunchSpecifications'][
                    'SpotSpecification'
                    ] = instanceFleetProvisioningSpecifications[
                    'SpotSpecification']
        instance_fleets.append(instance_fleet_config)
    return instance_fleets
