code: private void replacePlaceholdersWithCorrespondingMentionSpans(@NonNull Editable text) {
          PlaceholderSpan[] tempSpans = text.getSpans(0, text.length(), PlaceholderSpan.class);
          for (PlaceholderSpan span : tempSpans) {
              int spanStart = text.getSpanStart(span);
              String mentionDisplayString = span.holder.getDisplayString();
              int end = Math.min(spanStart + mentionDisplayString.length(), text.length());
              text.replace(spanStart, end, mentionDisplayString);
              text.setSpan(span.holder, spanStart, spanStart + mentionDisplayString.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
              text.removeSpan(span);
          }
      }
docs: Replaces any {@link com.linkedin.android.spyglass.ui.MentionsEditText.PlaceholderSpan} within the given text with
  the {@link MentionSpan} it contains.
  
  Note: These PlaceholderSpans are added in {@link #replaceMentionSpansWithPlaceholdersAsNecessary(CharSequence)}
  
  @param text the final version of the text after it was changed