Creates a change file that has a 'none' type.
static createEmptyChangeFiles(rushConfiguration: RushConfiguration, projectName: string, emailAddress: string): string | undefined;
|rushConfiguration||RushConfiguration||The rush configuration we are working with|
|projectName||string||The name of the project for which to create a change file|
|emailAddress||string||The email address which should be associated with this change|
string | undefined
the path to the file that was created, or undefined if no file was written