code: public boolean setField(String name, String value) throws IOException, DocumentException {
          return setField(name, value, null);
      }
docs: Sets the field value.
  
  @param name the fully qualified field name or the partial name in the case of XFA forms
  @param value the field value
  @throws IOException on error
  @throws DocumentException on error
  @return <CODE>true</CODE> if the field was found and changed,
  <CODE>false</CODE> otherwise