old_contents: // jscs: disable
  import Ember from 'ember';
  import MediaService from 'ember-responsive/media';
  
  const { K, getOwner } = Ember;
  const { classify } = Ember.String;
  
  MediaService.reopen({
    // Change this if you want a different default breakpoint in tests.
    _defaultBreakpoint: 'desktop',
  
    _breakpointArr: Ember.computed('breakpoints', function() {
      return Object.keys(this.get('breakpoints')) || Ember.A([]);
    }),
  
    _forceSetBreakpoint(breakpoint) {
      let found = false;
  
      const props = {};
      this.get('_breakpointArr').forEach(function(bp) {
        const val = bp === breakpoint;
        if (val) {
          found = true;
        }
  
        props[`is${classify(bp)}`] = val;
      });
  
      if (found) {
        this.setProperties(props);
      } else {
        throw new Error(
          `You tried to set the breakpoint to ${breakpoint}, which is not in your app/breakpoint.js file.`
        );
      }
    },
  
    match: K, // do not set up listeners in test
  
    init() {
      this._super(...arguments);
  
      this._forceSetBreakpoint(this.get('_defaultBreakpoint'));
    }
  });
  
  export default Ember.Test.registerAsyncHelper('setBreakpoint', function(app, breakpoint) {
    // this should use getOwner once that's supported
    const mediaService = app.__deprecatedInstance__.lookup('service:media');
    mediaService._forceSetBreakpoint(breakpoint);
  });
  
  export function setBreakpointForIntegrationTest(container, breakpoint) {
    const mediaService = getOwner(container).lookup('service:media');
    mediaService._forceSetBreakpoint(breakpoint);
    container.set('media', mediaService);
  
    return mediaService;
  }
  // jscs: enable
  
new_contents: // jscs: disable
  import Ember from 'ember';
  import MediaService from 'ember-responsive/media';
  
  const {
    getOwner
  } = Ember;
  const { classify } = Ember.String;
  
  MediaService.reopen({
    // Change this if you want a different default breakpoint in tests.
    _defaultBreakpoint: 'desktop',
  
    _breakpointArr: Ember.computed('breakpoints', function() {
      return Object.keys(this.get('breakpoints')) || Ember.A([]);
    }),
  
    _forceSetBreakpoint(breakpoint) {
      let found = false;
  
      const props = {};
      this.get('_breakpointArr').forEach(function(bp) {
        const val = bp === breakpoint;
        if (val) {
          found = true;
        }
  
        props[`is${classify(bp)}`] = val;
      });
  
      if (found) {
        this.setProperties(props);
      } else {
        throw new Error(
          `You tried to set the breakpoint to ${breakpoint}, which is not in your app/breakpoint.js file.`
        );
      }
    },
  
    match() {}, // do not set up listeners in test
  
    init() {
      this._super(...arguments);
  
      this._forceSetBreakpoint(this.get('_defaultBreakpoint'));
    }
  });
  
  export default Ember.Test.registerAsyncHelper('setBreakpoint', function(app, breakpoint) {
    // this should use getOwner once that's supported
    const mediaService = app.__deprecatedInstance__.lookup('service:media');
    mediaService._forceSetBreakpoint(breakpoint);
  });
  
  export function setBreakpointForIntegrationTest(container, breakpoint) {
    const mediaService = getOwner(container).lookup('service:media');
    mediaService._forceSetBreakpoint(breakpoint);
    container.set('media', mediaService);
  
    return mediaService;
  }
  // jscs: enable
  
subject: Remove deprecated Ember.K