[android] improved CustomGeometrySource constructor typing

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/sources/CustomGeometrySource.java

@@ -62,9 +62,9 @@ public class CustomGeometrySource extends Source {
   }
 
   /**
-   * Create a CustomGeometrySource with non-default CustomGeometrySourceOptions.
-   * <p>Supported options are minZoom, maxZoom, buffer, and tolerance.</p>
-   *  @param id       The source id.
+   * Create a CustomGeometrySource with non-default {@link CustomGeometrySourceOptions}.
+   *
+   * @param id       The source id.
    * @param options  CustomGeometrySourceOptions.
    * @param provider The tile provider that returns geometry data for this source.
    */

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/sources/CustomGeometrySourceOptions.java

@@ -1,9 +1,11 @@
 package com.mapbox.mapboxsdk.style.sources;
 
+import java.util.HashMap;
+
 /**
  * Builder class for composing CustomGeometrySource objects.
  */
-public class CustomGeometrySourceOptions extends GeoJsonOptions {
+public class CustomGeometrySourceOptions extends HashMap<String, Object> {
 
   /**
    * If the data includes wrapped coordinates, setting this to true unwraps the coordinates.
@@ -28,4 +30,48 @@ public class CustomGeometrySourceOptions extends GeoJsonOptions {
     return this;
   }
 
+  /**
+   * Minimum zoom level at which to create vector tiles (lower means more field of view detail at low zoom levels).
+   *
+   * @param minZoom the minimum zoom - Defaults to 0.
+   * @return the current instance for chaining
+   */
+  public CustomGeometrySourceOptions withMinZoom(int minZoom) {
+    this.put("minzoom", minZoom);
+    return this;
+  }
+
+  /**
+   * Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels).
+   *
+   * @param maxZoom the maximum zoom - Defaults to 25.5
+   * @return the current instance for chaining
+   */
+  public CustomGeometrySourceOptions withMaxZoom(int maxZoom) {
+    this.put("maxzoom", maxZoom);
+    return this;
+  }
+
+  /**
+   * Tile buffer size on each side (measured in 1/512ths of a tile; higher means fewer rendering artifacts near tile
+   * edges but slower performance).
+   *
+   * @param buffer the buffer size - Defaults to 128.
+   * @return the current instance for chaining
+   */
+  public CustomGeometrySourceOptions withBuffer(int buffer) {
+    this.put("buffer", buffer);
+    return this;
+  }
+
+  /**
+   * Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance).
+   *
+   * @param tolerance the tolerance - Defaults to 0.375
+   * @return the current instance for chaining
+   */
+  public CustomGeometrySourceOptions withTolerance(float tolerance) {
+    this.put("tolerance", tolerance);
+    return this;
+  }
 }