public UpdatePullRequestApprovalRuleContentRequest withExistingRuleContentSha256(String existingRuleContentSha256) {
        setExistingRuleContentSha256(existingRuleContentSha256);
        return this;
    }
<p>
The SHA-256 hash signature for the content of the approval rule. You can retrieve this information by using
<a>GetPullRequest</a>.
</p>

@param existingRuleContentSha256
       The SHA-256 hash signature for the content of the approval rule. You can retrieve this information by
       using <a>GetPullRequest</a>.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-codecommit/src/main/java/com/amazonaws/services/codecommit/model/UpdatePullRequestApprovalRuleContentRequest.java