docs: @Pure
  	public DBaseFieldType getDBFFieldType(int index) {
  		if (this.fieldCount != -1) {
  			try {
  				final DBaseFileField field = this.fields.get(index);
  				if (field != null) {
  					return field.getType();
  				}
  			} catch (Exception exception) {
  				//
  			}
  		}
  		return null;
  	}