@NonNull
	static WriteRequest newIndicationRequest(
			@Nullable final BluetoothGattCharacteristic characteristic,
			@Nullable final byte[] value,
			@IntRange(from = 0) final int offset, @IntRange(from = 0) final int length) {
		return new WriteRequest(Type.INDICATE, characteristic, value, offset, length);
	}
Creates new Send Indication request. The request will not be executed if given
characteristic is null or does not have INDICATE property.
After the operation is complete a proper callback will be invoked.

@param characteristic characteristic to be indicated.
@param value          value to be sent. The array is copied into another buffer so it's
                      safe to reuse the array again.
@param offset         the offset from which value has to be copied.
@param length         number of bytes to be copied from the value buffer.
@return The new request.
ble/src/main/java/no/nordicsemi/android/ble/Request.java