code: function(name, body) {
        hook('addingMatcher', name, body)
        if (name.indexOf(' ') != -1) {
          var matchers = name.split(/\s+/)
          var prefix = matchers.shift()
          each(matchers, function(name) {
            JSpec.addMatcher(prefix + '_' + name, body(name))
          })
        }
        this.matchers[name] = this.normalizeMatcherMessage(this.normalizeMatcherBody(body))
        this.matchers[name].name = name
      }
docs: Define a matcher.
  
  @param  {string} name
  @param  {hash, function, string} body
  @api public