public void setPartSizeInBytes(Long partSizeInBytes) {
        this.partSizeInBytes = partSizeInBytes;
    }
<p>
The part size, in bytes, specified in the Initiate Multipart Upload request. This is the size of all the parts in
the upload except the last part, which may be smaller than this size.
</p>

@param partSizeInBytes
       The part size, in bytes, specified in the Initiate Multipart Upload request. This is the size of all the
       parts in the upload except the last part, which may be smaller than this size.
aws-java-sdk-glacier/src/main/java/com/amazonaws/services/glacier/model/UploadListElement.java