Remove dependency on commons-lang3.

Author: Augusto Passalaqua

javasource/databaseconnectortest/actions/AssertEqualsListEntityValues.java

@@ -11,7 +11,6 @@
 
 import static java.lang.String.format;
 import static java.util.stream.Collectors.joining;
-import static org.apache.commons.lang3.StringUtils.isEmpty;
 import java.io.IOException;
 import java.io.InputStream;
 import java.math.BigDecimal;
@@ -90,6 +89,10 @@ private Optional<String> compare(int objectNr, IMendixObject expected, IMendixOb
     return isEmpty(message) ? Optional.empty() : Optional.of(format("Row %s: ", objectNr) + message);
   }
 
+  private boolean isEmpty(String message) {
+    return message == null || message.isBlank();
+  }
+
   private Optional<String> compare(PrimitiveType primitiveType, IMendixObjectMember<?> expected, IMendixObjectMember<?> actual) {
     Object expectedValue = toComparableValue(expected.getValue(getContext()));
     Object actualValue = toComparableValue(actual.getValue(getContext()));