@Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getDomain() != null)
            sb.append("Domain: ").append(getDomain()).append(",");
        if (getDomainOwner() != null)
            sb.append("DomainOwner: ").append(getDomainOwner()).append(",");
        if (getMaxResults() != null)
            sb.append("MaxResults: ").append(getMaxResults()).append(",");
        if (getNextToken() != null)
            sb.append("NextToken: ").append(getNextToken()).append(",");
        if (getPrefix() != null)
            sb.append("Prefix: ").append(getPrefix());
        sb.append("}");
        return sb.toString();
    }
Returns a string representation of this object. This is useful for testing and debugging. Sensitive data will be
redacted from this string using a placeholder value.

@return A string representation of this object.

@see java.lang.Object#toString()
aws-java-sdk-codeartifact/src/main/java/com/amazonaws/services/codeartifact/model/ListPackageGroupsRequest.java