code: public void putAll(ArrayMap<? extends K, ? extends V> array) {
          final int N = array.mSize;
          ensureCapacity(mSize + N);
          if (mSize == 0) {
              if (N > 0) {
                  System.arraycopy(array.mHashes, 0, mHashes, 0, N);
                  System.arraycopy(array.mArray, 0, mArray, 0, N<<1);
                  mSize = N;
              }
          } else {
              for (int i=0; i<N; i++) {
                  put(array.keyAt(i), array.valueAt(i));
              }
          }
      }
docs: Perform a {@link #put(Object, Object)} of all key/value pairs in <var>array</var>
  @param array The array whose contents are to be retrieved.