old_contents: /*
   * Copyright 2014-2015 Fabian Tollenaar <fabian@starting-point.nl>
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  var Transform = require('stream').Transform;
  
  var toDelta = require('n2k-signalk').toDelta;
  
  require('util').inherits(ToSignalK, Transform);
  
  function ToSignalK() {
    Transform.call(this, {
      objectMode: true
    });
  }
  
  
  ToSignalK.prototype._transform = function(chunk, encoding, done) {
    var delta = toDelta(chunk);
    if (delta && delta.updates[0].values.length > 0) {
      this.push(delta);
    }
    done();
  }
  
  ToSignalK.prototype.start = function() {}
  ToSignalK.prototype.stop = function() {}
  
  module.exports = ToSignalK;
new_contents: /*
   * Copyright 2014-2015 Fabian Tollenaar <fabian@starting-point.nl>
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  var Transform = require('stream').Transform;
  
  var toDelta = require('n2k-signalk').toDelta;
  
  require('util').inherits(ToSignalK, Transform);
  
  function ToSignalK() {
    Transform.call(this, {
      objectMode: true
    });
  }
  
  
  ToSignalK.prototype._transform = function(chunk, encoding, done) {
    var delta = toDelta(chunk);
    if (delta && delta.updates[0].values.length > 0) {
      this.push(delta);
    }
    done();
  }
  
  
  module.exports = ToSignalK;
subject: Remove methods left over from previous pipedprovider mechanism