public void setStageName(String stageName) {
        this.stageName = stageName;
    }
<p>
The stage name. Stage names can only contain alphanumeric characters, hyphens, and underscores. Maximum length is
128 characters.
</p>

@param stageName
       The stage name. Stage names can only contain alphanumeric characters, hyphens, and underscores. Maximum
       length is 128 characters.
aws-java-sdk-apigatewayv2/src/main/java/com/amazonaws/services/apigatewayv2/model/GetStageRequest.java