Merge pull request #11 from sentrysoftware/feature/fix-issue-10-immut…

…able-collections

[#10] Fix Unsupported Operation Exception when using CiscoUCSRest request using CLI

src/main/java/org/sentrysoftware/wmi/WqlQuery.java

@@ -22,7 +22,14 @@
 
 import org.sentrysoftware.wmi.exceptions.WqlQuerySyntaxException;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
@@ -113,7 +120,7 @@ static List<String> buildSelectedProperties(String propertiesFragment) {
 		if (Utils.isNotBlank(propertiesFragment)) {
 			return Arrays.asList(propertiesFragment.trim().toLowerCase().split("\\s*,\\s*"));
 		}
-		return Collections.emptyList();
+		return new ArrayList<>();
 	}
 
 	/**
@@ -137,7 +144,7 @@ static Map<String, Set<String>> buildSupPropertiesMap(final List<String> propert
 
 		// Empty or null?
 		if (properties == null || properties.isEmpty()) {
-			return Collections.emptyMap();
+			return new HashMap<>();
 		}
 
 		Map<String, Set<String>> subPropertiesMap = new LinkedHashMap<>();