add congestion numeric support to leg annotation

Author: abhishek1508

services-directions-models/src/main/java/com/mapbox/api/directions/v5/DirectionsCriteria.java

@@ -125,7 +125,7 @@ public final class DirectionsCriteria {
    * in the route leg.
    * This annotation is only available for the {@link DirectionsCriteria#PROFILE_DRIVING_TRAFFIC}.
    */
-  public static final String ANNOTATION_CONGESTION_NUMERIC = "congestion_NUMERIC";
+  public static final String ANNOTATION_CONGESTION_NUMERIC = "congestion_numeric";
 
   /**
    * The maximum speed limit between the coordinates of a segment.

services-directions-models/src/main/java/com/mapbox/api/directions/v5/models/LegAnnotation.java

@@ -5,6 +5,7 @@
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.SerializedName;
 import com.mapbox.api.directions.v5.DirectionsAdapterFactory;
 
 import java.util.List;
@@ -81,6 +82,16 @@ public static Builder builder() {
   @Nullable
   public abstract List<String> congestion();
 
+  /**
+   * The congestion between each pair of coordinates.
+   *
+   * @return a list of Integers with each entry being a congestion value between two of the
+   *   routeLeg geometry coordinates
+   */
+  @Nullable
+  @SerializedName("congestion_numeric")
+  public abstract List<Integer> congestionNumeric();
+
   /**
    * Convert the current {@link LegAnnotation} to its builder holding the currently assigned
    * values. This allows you to modify a single property and then rebuild the object resulting in
@@ -176,6 +187,15 @@ public abstract static class Builder {
      */
     public abstract Builder congestion(@Nullable List<String> congestion);
 
+    /**
+     * The congestion between each pair of coordinates.
+     *
+     * @param congestionNumeric a list of Integers with each entry being a congestion value between
+     *   two of the routeLeg geometry coordinates
+     * @return this builder for chaining options together
+     */
+    public abstract Builder congestionNumeric(@Nullable List<Integer> congestionNumeric);
+
     /**
      * Build a new {@link LegAnnotation} object.
      *

services-directions-models/src/test/java/com/mapbox/api/directions/v5/models/LegAnnotationTest.java

@@ -15,6 +15,7 @@ public class LegAnnotationTest extends TestUtils {
   @Test
   public void sanity() throws Exception {
     LegAnnotation annotation = LegAnnotation.builder()
+      .congestionNumeric(new ArrayList<Integer>())
       .congestion(new ArrayList<String>())
       .distance(new ArrayList<Double>())
       .duration(new ArrayList<Double>())
@@ -30,6 +31,7 @@ public void testSerializable() throws Exception {
     distance.add(40d);
     distance.add(60d);
     LegAnnotation annotation = LegAnnotation.builder()
+      .congestionNumeric(new ArrayList<Integer>())
       .congestion(new ArrayList<String>())
       .distance(distance)
       .duration(new ArrayList<Double>())
@@ -73,7 +75,6 @@ public void testToFromJson1() {
       4.2,
       4.2);
 
-
     List<String> congestionList = Arrays.asList(
       "low",
       "moderate",
@@ -84,8 +85,18 @@ public void testToFromJson1() {
       "heavy",
       "heavy");
 
+    List<Integer> congestionNumericList = Arrays.asList(
+        0,
+        4,
+        4,
+        4,
+        null,
+        0,
+        0,
+        0);
+
     LegAnnotation annotation = LegAnnotation.builder()
-      .congestion(new ArrayList<String>())
+      .congestionNumeric(congestionNumericList)
       .distance(distanceList)
       .duration(durationList)
       .speed(speedList)