code: public final OMVRBTreeEntry<K, V> getEntry(final Object key, final PartialSearchMode partialSearchMode) {
      return getEntry(key, false, partialSearchMode);
    }
docs: Returns this map's entry for the given key, or <tt>null</tt> if the map does not contain an entry for the key.
  
  In case of {@link OCompositeKey} keys you can specify which key can be used: lowest, highest, any.
  
  @param key
  Key to search.
  @param partialSearchMode
  Which key can be used in case of {@link OCompositeKey} key is passed in.
  
  @return this map's entry for the given key, or <tt>null</tt> if the map does not contain an entry for the key
  @throws ClassCastException
  if the specified key cannot be compared with the keys currently in the map
  @throws NullPointerException
  if the specified key is null and this map uses natural ordering, or its comparator does not permit null keys