Method contains

gson/src/main/java/com/google/gson/JsonArray.java:189–191

Returns true if this array contains the specified element. @return true if this array contains the specified element. @param element whose presence in this array is to be tested @since 2.3

(JsonElement element)

   * @since 2.3
   */
  public boolean contains(JsonElement element) {
    return elements.contains(element);
  }

  /**
   * Returns the number of elements in the array.