Test square brackets with index/key expressions

See gh-27925

spring-r2dbc/src/main/java/org/springframework/r2dbc/core/NamedParameterUtils.java

@@ -37,8 +37,7 @@ import org.springframework.util.Assert;
 /**
  * Helper methods for named parameter parsing.
  *
- * <p>Only intended for internal use within Spring's R2DBC
- * framework.
+ * <p>Only intended for internal use within Spring's R2DBC framework.
  *
  * <p>References to the same parameter name are substituted with
  * the same bind marker placeholder if a {@link BindMarkersFactory} uses
@@ -293,7 +292,6 @@ abstract class NamedParameterUtils {
 			if (paramSource.hasValue(paramName)) {
 				Object value = paramSource.getValue(paramName);
 				if (value instanceof Collection) {
-
 					Iterator<?> entryIter = ((Collection<?>) value).iterator();
 					int k = 0;
 					int counter = 0;