public void setNonmatchingETagConstraints(List<String> eTagList) {
        this.nonmatchingEtagConstraints = eTagList;
    }
Sets the optional list of ETag constraints that when present <b>must</b>
not include a match for the object's current ETag in order for this
request to be executed. If any entry in the non-matching ETag constraint
list matches the object's current ETag, this request <b>will not</b> be
executed by Amazon S3.

@param eTagList
           The list of ETag constraints that, when present, <b>must not</b>
           include a match for the object's current ETag in order for
           this request to be executed.

@see GetObjectRequest#getNonmatchingETagConstraints()
@see GetObjectRequest#withNonmatchingETagConstraint(String)
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/GetObjectRequest.java