public static String getNamespaceSelector(String namespace) {
    	StringBuilder fieldSelector = new StringBuilder();
		fieldSelector.append(MetadataFieldSelector.METADATA_NAMESPACE.getFieldName()).append(ToolConstants.EQUALS_SYMBOL).append(namespace);
		return fieldSelector.toString();
    }
it will return namespace field selector
commons/src/main/java/io/hyscale/commons/utils/ResourceSelectorUtil.java