_replaceCurrentWordInlineUnsafe (word, replacement) { // __MARKTEXT_PATCH__
    return this.contentState._replaceCurrentWordInlineUnsafe(word, replacement)
  }
Replace the current selected word with the given replacement.

NOTE: Unsafe method because exacly one word have to be selected. This
is currently used to replace a misspelled word in MarkText that was selected
by Chromium.

@param {string} word The old word that should be replaced. The whole word must be selected.
@param {string} replacement The word to replace the selecte one.
@returns {boolean} True on success.