Minor fixes

src/main/java/org/verapdf/wcag/algorithms/entities/content/TextBlock.java

@@ -73,6 +73,12 @@ public void add(TextLine line) {
 		textLines.add(line);
 		super.add(line);
 	}
+
+	public void add(List<TextLine> lines) {
+		for (TextLine line : lines) {
+			add(line);
+		}
+	}
 
 	public int getLinesNumber() {
 		return textLines.size();

src/main/java/org/verapdf/wcag/algorithms/entities/lists/ListInterval.java

@@ -13,7 +13,7 @@ public class ListInterval {
 	private List<ListItemInfo> listItemsInfos = new ArrayList<>();
 	public Integer numberOfColumns;
 
-	public  ListInterval() {
+	public ListInterval() {
 
 	}
 

src/main/java/org/verapdf/wcag/algorithms/semanticalgorithms/consumers/AccumulatedNodeConsumer.java

@@ -259,7 +259,7 @@ else if (differentLinesProbability >= toColumnsMergeProbability) {
 				mergeProbability = differentLinesProbability;
 				TextColumn lastColumn = new TextColumn(currentTextNode.getLastColumn());
 				TextBlock lastBlock = new TextBlock(lastColumn.getLastTextBlock());
-				lastBlock.getLines().addAll(lines);
+				lastBlock.add(lines);
 				lastColumn.setLastTextBlock(lastBlock);
 				currentTextNode.setLastColumn(lastColumn);
 				if (nextTextNode.getColumnsNumber() > 1) {

src/main/java/org/verapdf/wcag/algorithms/semanticalgorithms/consumers/ClusterTableConsumer.java

@@ -26,7 +26,7 @@ public class ClusterTableConsumer extends WCAGConsumer {
     private final List<Table> tables;
     private final List<PDFList> lists;
 
-    public  ClusterTableConsumer() {
+    public ClusterTableConsumer() {
         tables = new ArrayList<>();
         lists = new ArrayList<>();
         init();

src/main/java/org/verapdf/wcag/algorithms/semanticalgorithms/consumers/LinesPreprocessingConsumer.java

@@ -6,10 +6,7 @@
 import org.verapdf.wcag.algorithms.semanticalgorithms.containers.StaticContainers;
 import org.verapdf.wcag.algorithms.semanticalgorithms.utils.WCAGProgressStatus;
 
-import java.util.List;
-import java.util.LinkedList;
-import java.util.Set;
-import java.util.HashSet;
+import java.util.*;
 
 public class LinesPreprocessingConsumer extends WCAGConsumer {
 
@@ -32,7 +29,7 @@ public void findTableBorders() {
     }
 
     private List<TableBorderBuilder> findTableBorders(Integer pageNumber) {
-        List<TableBorderBuilder> tableBorders = new LinkedList<>();
+        List<TableBorderBuilder> tableBorders = new ArrayList<>();
         Set<LineChunk> set = new HashSet<>(StaticContainers.getLinesCollection().getHorizontalLines(pageNumber));
         set.addAll(StaticContainers.getLinesCollection().getVerticalLines(pageNumber));
         set.addAll(StaticContainers.getLinesCollection().getSquares(pageNumber));