Method matches

src/main/java/com/google/gson/reflect/TypeToken.java:274–280

Checks if two types are the same or are equivalent under a variable mapping given in the type map that was provided.

(Type from, Type to, Map<String, Type> typeMap)

   * given in the type map that was provided.
   */
  @SuppressWarnings("unchecked")
  private static boolean matches(Type from, Type to, Map<String, Type> typeMap) {
    return to.equals(from)
        || (from instanceof TypeVariable
        && to.equals(typeMap.get(((TypeVariable<?>) from).getName())));

  }

  @Override public final int hashCode() {
    return this.hashCode;