requestUpdateInternal(name, oldValue, options) {
            let shouldRequestUpdate = true;
            // If we have a property key, perform property update steps.
            if (name !== undefined) {
                const ctor = this.constructor;
                options = options || ctor.getPropertyOptions(name);
                if (ctor._valueHasChanged(this[name], oldValue, options.hasChanged)) {
                    if (!this._changedProperties.has(name)) {
                        this._changedProperties.set(name, oldValue);
                    }
                    // Add to reflecting properties set.
                    // Note, it's important that every change has a chance to add the
                    // property to `_reflectingProperties`. This ensures setting
                    // attribute + property reflects correctly.
                    if (options.reflect === true &&
                        !(this._updateState & STATE_IS_REFLECTING_TO_PROPERTY)) {
                        if (this._reflectingProperties === undefined) {
                            this._reflectingProperties = new Map();
                        }
                        this._reflectingProperties.set(name, options);
                    }
                }
                else {
                    // Abort the request if the property should not be considered changed.
                    shouldRequestUpdate = false;
                }
            }
            if (!this._hasRequestedUpdate && shouldRequestUpdate) {
                this._updatePromise = this._enqueueUpdate();
            }
        }
/**
         * This protected version of `requestUpdate` does not access or return the
         * `updateComplete` promise. This promise can be overridden and is therefore
         * not free to access.
         */
This protected version of `requestUpdate` does not access or return the
`updateComplete` promise. This promise can be overridden and is therefore
not free to access.
This protected version of ` requestUpdate ` does not access or return the ` updateComplete ` promise . This promise can be overridden and is therefore not free to access .
requestUpdateInternal(name, oldValue, options) {
            let shouldRequestUpdate = true;
            if (name !== undefined) {
                const ctor = this.constructor;
                options = options || ctor.getPropertyOptions(name);
                if (ctor._valueHasChanged(this[name], oldValue, options.hasChanged)) {
                    if (!this._changedProperties.has(name)) {
                        this._changedProperties.set(name, oldValue);
                    }
                    if (options.reflect === true &&
                        !(this._updateState & STATE_IS_REFLECTING_TO_PROPERTY)) {
                        if (this._reflectingProperties === undefined) {
                            this._reflectingProperties = new Map();
                        }
                        this._reflectingProperties.set(name, options);
                    }
                }
                else {
                    shouldRequestUpdate = false;
                }
            }
            if (!this._hasRequestedUpdate && shouldRequestUpdate) {
                this._updatePromise = this._enqueueUpdate();
            }
        }
requestUpdateInternal ( name , oldValue , options ) { let shouldRequestUpdate = true ; if ( name !== undefined ) { const ctor = this . constructor ; options = options || ctor . getPropertyOptions ( name ) ; if ( ctor . _valueHasChanged ( this [ name ] , oldValue , options . hasChanged ) ) { if ( ! this . _changedProperties . has ( name ) ) { this . _changedProperties . set ( name , oldValue ) ; } if ( options . reflect === true && ! ( this . _updateState & STATE_IS_REFLECTING_TO_PROPERTY ) ) { if ( this . _reflectingProperties === undefined ) { this . _reflectingProperties = new Map ( ) ; } this . _reflectingProperties . set ( name , options ) ; } } else { shouldRequestUpdate = false ; } } if ( ! this . _hasRequestedUpdate && shouldRequestUpdate ) { this . _updatePromise = this . _enqueueUpdate ( ) ; } }
This protected version of `requestUpdate` does not access or return the
 `updateComplete` promise.
This protected version of ` requestUpdate ` does not access or return the ` updateComplete ` promise .
// If we have a property key, perform property update steps. // Add to reflecting properties set. // Note, it's important that every change has a chance to add the // property to `_reflectingProperties`. This ensures setting // attribute + property reflects correctly. // Abort the request if the property should not be considered changed.