added IsEmpty function for string utils

string_utils/string_utils.go

@@ -168,3 +168,11 @@ func PtoString(stringPointer *string) string {
 
 	return *stringPointer
 }
+
+func IsEmpty(sp *string) bool {
+	if sp == nil {
+		return true
+	}
+
+	return len(*sp) == 0
+}
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