text: 
  /*
   * Copyright (C) 2015 ICOS Group, Newcastle University.  All rights reserved.
   * Contact:  James Alastair McLaughlin <j.a.mclaughlin@ncl.ac.uk>
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *  
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *  
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  "use strict";
  
  var URI = require('urijs'),
      Identified = require('./Identified'),
      util = require('./util');
  
  /**
   * Class to represent an SBOL2 Interaction.
   */
  class Interaction extends Identified
  {
      constructor(sbolDocument, uri) {
  
          super(sbolDocument, uri);
  
          this._types = [];
          this._participations = [];
          this._measures = [];
      }
  
      /**
       * Add a type to this Interaction.
       * @param {string|URI} [type]
       */
      addType(type) {
          this._types.push(util.uriOrObject(type));
      }
  
      /**
       * Retrieve a list of types for this Interaction.
       * @returns {URI[]} [types]
       */
      get types() {
          return this._types;
      }
      
      /**
       * Add a Participation to this Interaction.
       * @param {string|URI|Paticipation} [participation]
       */
      addParticipation(participation) {
          this._participations.push(util.uriOrObject(participation));
      }
  
      /**
       * Retrieve the list of Participations for this Interaction.
       * There may be URIs present in this list if the participation(s) have not
       * yet been resolved.
       *
       * @returns {Participation[]}
       */
      get participations() {
          return this._participations;
      }
  
      /**
       * Retrieve the list of measures assigned to this Interaction.  There may be
       * URIs present in this list if the measures(s) have not yet been resolved.
       *
       * @returns {Measure[]}
       */
      get measures() {
          return this._measures.slice(0);
      }
  
      /**
       * Add a Measure to this Interaction.
       * @param {string|URI|Measure} [measure]
       */
      addMeasure(measure) {
          this._measures.push(util.uriOrObject(measure));
      }
  
      /**
       * Attempt to resolve participations by URI.
       */
      link() {
          this._participations = this._sbolDocument.lookupURIs(this._participations);
          this._measures = this._sbolDocument.lookupURIs(this._measures);
      }
  }
  
  module.exports = Interaction;
  
  