Method constructor

example/platform/board/edison.js:20–34

(name, type, description)

class EdisonThing extends Thing {
  constructor(name, type, description) {
    super('urn:dev:ops:my-edison-1234',
          name || 'Edison',
          type || [],
          description || 'A web connected Edison');
    const self = this;
    this.pinProperties = [
      new PwmProperty(this, 'PWM0', 50, {
        description: 'Analog port of Edison',
      }),
    ];
    this.pinProperties.forEach((property) => {
      self.addProperty(property);
    });
  }

  close() {
    this.pinProperties.forEach((property) => {