Expose explicit landmark selection in api.
Expose explicit landmark selection in api.

queenBNE/javaplex,appliedtopology/javaplex,queenBNE/javaplex,queenBNE/javaplex,appliedtopology/javaplex,appliedtopology/javaplex,appliedtopology/javaplex,queenBNE/javaplex,queenBNE/javaplex,appliedtopology/javaplex,appliedtopology/javaplex,queenBNE/javaplex