code: function locate (methods) {
    var found = []
    var i = -1
  
    while (++i < methods.length) {
      if (methods[i] && methods[i].match(/FrontMatter$/)) {
        found.push(methods[i])
      }
    }
  
    return found
  }
docs: Locate any frontMatter methods that have been attatched to the Parser
  methods - A list of blockMethods, e.g. [ "yamlFrontMatter" ]