public void setPackageGroup(String packageGroup) {
        this.packageGroup = packageGroup;
    }
<p>
The pattern of the package group to be updated.
</p>

@param packageGroup
       The pattern of the package group to be updated.
aws-java-sdk-codeartifact/src/main/java/com/amazonaws/services/codeartifact/model/UpdatePackageGroupRequest.java