How to use the @angular/common/src/location/location_strategy.APP_BASE_HREF function in @angular/common

get _LocationStrategy_8():import9.PathLocationStrategy {
    if ((this.__LocationStrategy_8 == null)) { (this.__LocationStrategy_8 = new import9.PathLocationStrategy(this.parent.get(import15.PlatformLocation),this.parent.get(import16.APP_BASE_HREF,(null as any)))); }
    return this.__LocationStrategy_8;
  }
  get _Location_9():import10.Location {

get: function () {
            if ((this.__LocationStrategy_65 == null)) {
                (this.__LocationStrategy_65 = import8.provideLocationStrategy(this.parent.get(import60.PlatformLocation), this.parent.get(import61.APP_BASE_HREF, null), this._Config_21));
            }
            return this.__LocationStrategy_65;
        },
        enumerable: true,

get: function () {
            if ((this.__LocationStrategy_65 == null)) {
                (this.__LocationStrategy_65 = import8.provideLocationStrategy(this.parent.get(import60.PlatformLocation), this.parent.get(import61.APP_BASE_HREF, null), this._Config_21));
            }
            return this.__LocationStrategy_65;
        },
        enumerable: true,

get: function () {
            if ((this.__LocationStrategy_63 == null)) {
                (this.__LocationStrategy_63 = import8.provideLocationStrategy(this.parent.get(import75.PlatformLocation), this.parent.get(import76.APP_BASE_HREF, null), this._Config_21));
            }
            return this.__LocationStrategy_63;
        },
        enumerable: true,

get: function () {
            if ((this.__LocationStrategy_65 == null)) {
                (this.__LocationStrategy_65 = import8.provideLocationStrategy(this.parent.get(import60.PlatformLocation), this.parent.get(import61.APP_BASE_HREF, null), this._Config_21));
            }
            return this.__LocationStrategy_65;
        },
        enumerable: true,

get _LocationStrategy_63():any {
    if ((this.__LocationStrategy_63 == (null as any))) { (this.__LocationStrategy_63 = import8.provideLocationStrategy(this.parent.get(import62.PlatformLocation),this.parent.get(import63.APP_BASE_HREF,(null as any)),this._Config_21)); }
    return this.__LocationStrategy_63;
  }
  get _Location_64():import36.Location {

get _LocationStrategy_8():import9.PathLocationStrategy {
    if ((this.__LocationStrategy_8 == null)) { (this.__LocationStrategy_8 = new import9.PathLocationStrategy(this.parent.get(import15.PlatformLocation),this.parent.get(import16.APP_BASE_HREF,(null as any)))); }
    return this.__LocationStrategy_8;
  }
  get _Location_9():import10.Location {