Method getMarshaller

api/src/main/java/io/grpc/Metadata.java:850–856

Gets this keys (implementation-specific) marshaller, or null if the marshaller is not of the given type. @param marshallerClass The type we expect the marshaller to be. @return the marshaller object for this key, or null.

(Class<M> marshallerClass)

     * @return the marshaller object for this key, or null.
     */
    @Nullable
    final <M> M getMarshaller(Class<M> marshallerClass) {
      if (marshallerClass.isInstance(marshaller)) {
        return marshallerClass.cast(marshaller);
      }
      return null;
    }
  }

  private static class BinaryKey<T> extends Key<T> {