public void setBeginOffset(Integer beginOffset) {
        this.beginOffset = beginOffset;
    }
<p>
The offset into the document text where the mention begins.
</p>

@param beginOffset
       The offset into the document text where the mention begins.
aws-java-sdk-comprehend/src/main/java/com/amazonaws/services/comprehend/model/TargetedSentimentMention.java