public String getField() {
        return this.field;
    }
<p>
The field to apply the placement strategy against. For the spread placement strategy, valid values are instanceId
(or host, which has the same effect), or any platform or custom attribute that is applied to a container
instance, such as attribute:ecs.availability-zone. For the binpack placement strategy, valid values are cpu and
memory. For the random placement strategy, this field is not used.
</p>

@return The field to apply the placement strategy against. For the spread placement strategy, valid values are
        instanceId (or host, which has the same effect), or any platform or custom attribute that is applied to a
        container instance, such as attribute:ecs.availability-zone. For the binpack placement strategy, valid
        values are cpu and memory. For the random placement strategy, this field is not used.
aws-java-sdk-pipes/src/main/java/com/amazonaws/services/pipes/model/PlacementStrategy.java