code: public void setSearchText(String searchText) {
          if (TextUtils.isEmpty(searchText)) {
              searchText = null;
          }
          this.searchText = searchText;
          if (this.searchBox != null) {
              this.searchBox.setText(searchText);
          }
      }
docs: Sets the search text (e.g., category, name) to search for. Either the location or the search
  text (or both) must be specified. If a search box is displayed, this will update its contents
  to the specified text.
  
  @param searchText the search text