code: public boolean get(int key, boolean valueIfKeyNotFound) {
          int i = ContainerHelpers.binarySearch(mKeys, mSize, key);
  
          if (i < 0) {
              return valueIfKeyNotFound;
          } else {
              return mValues[i];
          }
      }
docs: Gets the boolean mapped from the specified key, or the specified value
  if no such mapping has been made.