@Override
    public void writeToParcel(Parcel parcel, int flags) {
        parcel.writeInt(getColumn());
        parcel.writeInt(getRow());
    }
Gets the ID.It is counted from left to right, top to bottom of the
matrix, starting by zero.

@return the ID.
android-patternview/src/main/java/com/eftimoff/patternview/cells/Cell.java