code: protected void setArrayStart(String arrayStart) {
          if (arrayStart == null) {
              arrayStart = StringUtils.EMPTY;
          }
          this.arrayStart = arrayStart;
      }
docs: <p>Sets the array start text.</p>
  
  <p><code>null</code> is accepted, but will be converted to
  an empty String.</p>
  
  @param arrayStart  the new array start text