public void setPartFirstByte(Long partFirstByte) {
        this.partFirstByte = partFirstByte;
    }
<p>
The position of the first byte of the layer part witin the overall image layer.
</p>

@param partFirstByte
       The position of the first byte of the layer part witin the overall image layer.
aws-java-sdk-ecrpublic/src/main/java/com/amazonaws/services/ecrpublic/model/UploadLayerPartRequest.java